Yes, look at this event below, even though they didn't state Bitcointalk, but they wrote "crypto community with at least 10K members", this forum is also crypto community and the total members are higher than that.
I just checked their Discord server and from what I understand, they are supposed to report their wok in dedicated channel in ordere to get the reward and I haven't noticed anyone sharing bitcointalk screenshots so I think these shills might not be connected with that contest. Either way, whoever Bitget hired to do this is better than those standard shills that usually write inside the project's announcement thread.
Speaking of that, 2-3 years ago I was onto a group of high ranking accounts that were involved in the similar type of shilling but they did such a good job and were very careful that it was hard to prove beyond reasonable doubt that they actually shilled for shitcoins so in the end I just gave up as it didn't make much sense to shit on someone's rep without proper proof.