Where are those giveaways coming from?

They posted giveaways with less than the minimum number of keys allowed by the reddit, in order to advertise/recruit for various groups, twitter, twitch, etc.

Giveaways need more than 1000 keys.

You can also get it for free this month if you are having twitch prime(no steam key, just for their launcher)...so maybe some users who don't care about having it on steam give away their key from the monthly ¯_(ツ)_/¯

But hasn't Twitch stopped giving away Steam keys quite a while ago and now uses their own client for freebies?

Sorry, I edited my answer to make it more clear :)
You don't get a steam key...it will just be added to your twitch account and you have to use their launcher to download and play it :/

Yeah, but I don't know if those twitch game prime games count as DRM free...I've never tried them, so I don't know if you can play them without the launcher ¯_(ツ)_/¯
So maybe it's more like keeping the uplay copy and giving away the steam key (＾∇＾)

It's confirmed quite a few of the games on Twitch are indeed DRM free, they just need the launcher to initially download them.

I know several who got it from the Lootboy Twitch Lootpack (given out on stream to 500 watchers an hour ago).

Quantum League?

Edit: Twitch, I see... would link thread but on mobile

It s a Twitch Drop.
You have to go on a Twitch Chanell whic play the game, with drops activated, link your twitc to your paradox account here: https://accounts.paradoxplaza.com/settings and watch the stream for half an hour

I guess free stuff makes some people go crazy, they just need to hoard everything they can get their hands on and they will go a long way to ensure they are able to grab multiple copies. I mean... the person I was talking about... 12 GA's, so 12 Twitch accounts. O_o That's ridiculous.

From Twitch (5000 channel points).
I think channel name will be considered as an advertising, so sorry can't give you a link (but I think, I can give you a hint of name - godfather squad hit)

I can assume these keys came from Twitch (5000 channel points) - sorry I can't provide link/name since this will be against the SG rules.

View attached image.

https://www.steamgifts.com/go/comment/Yi1IECc
The same price and the same Twitch channel
Upd: https://www.steamgifts.com/go/comment/RL0oPdE

From Twitch - 25 channel points
https://www.steamgifts.com/go/comment/RL0oPdE
also from companion Twitch channel (without channel points) - 500 clams (35 clams for 10 minutes of watching)

hits squad god father twitch channel collect the coins by watching (or leaving it open) and collected coins can be exchanged for steam keys that game is 5000 coins

huh i never seen channels do that before... then again i barely use twitch aside of watching 1 person lol.

are there other channels like that , that are offering the same thing :?

InSpec has posted about them a few times ... seems the ones we know about started about a month ago:
https://www.steamgifts.com/discussion/EhJvw/where-are-those-giveaways-coming-from/search?q=twitch

From Twitch - https://www.steamgifts.com/go/comment/NK6AcZV
I think it was for 5000 channel points (ended)

From this Twitch channel. There is a link to the streamelements in the descriprion

maybe that Twitcher, look for the post of Ms. Wigglenose

Both from Twitch squad hit godfather (combine them in correct order): Animal was 4000 points - sold out, rododendron - 3000 points, 24 keys left.

If it's from that Twitch channel, It's actually just the base game Panzer Corps and not the Gold Edition including all DLCs.

As WaxWorm said - from the Twitch channel and I assume everyone was mislead with the edition because preview image in shop was for Gold edition.
Direct link or channel name will fall to promoting social media and can cause suspension here - so hint is pretty much obvious (hint is few messages above).

https://www.twitch.tv/hitsquadgodfather - watch this Twitch and earn points 50 points per 10 minutes and cash them in or spend them here - https://streamelements.com/hitsquadgodfather/store

they have had it along with a couple other VR games for just 25 coins each

coughing
hitsquad twitch stream point shop

This is the source of the most "full value" games, that land with a lot of copies on sg, lately.