Thanks for sharing but are these telegram are not owned by you? and just promoting here to gain more followers and members?
You have even answered your own question. he was promoting his own telegram group to make it being crowded. There are so many airdrop channel that also managed by various bounty manager like irfan pak or bounty detective but it seems like that all of airdrops that already mentioned by OP were not legit airdrops.
There are bunch of legit airdrop like copuppy, biconomy and many more but it seems like that OP was taking only airdrop from the garbage token developers. He needs more members to fain popularity and that makes the dev can consider to run airdrop on his group. Some bounty managers have been managing the airdrop caused by they have enough audience that can be reached by the developers.
That's why this is another promotional thread for his group. So many airdrop these days have become useless tokens in my wallet.
Yeah that is why i clear it for the knowledge of everyone lol.
But also i know this is how they lure telegram members and in the future they will sell the group to other users once they gathered enough member.