Using the TON network as the main network because it exists on Telegram and can make deposits and withdrawals easily.
The TON chain is not the only chain we can use on Telegram... Any chain can be used, there are many Apps on Telegram that have other chains as well, it's up to moderators to choose which chains they wish to implement in their App. And many of them are pretty fast...
If I don't use Telegram much but seeing that, it seems to me that I won't trust any data coming from them. No way that site reaches even 10% of monthly users. Neither this site nor any other Telegram site. I don't know how the fuck they got that figure, but it is obviously false.
They are pumping numbers to attract people, there is no other explanation for what they are doing. And it is possible that it will attract some new people, but experienced poker players (as well as gamblers) will not fall for this trick.
You have nicely compared the PokerStars and how many active players they have with this new poker app. Anyone smart will draw their own conclusion from this…