I can’t say I read the whole thing because the technical analysis went over my head, but I don’t think we read the same conclusion

Conclusions

Based on the analysis of packet captures above, I believe it is clear that anyone who has sufficient visibility into Telegram’s traffic would be able to identify and track traffic of specific user devices. Including when perfect forward secrecy protocol feature is in use.

This would also allow, through some additional analysis based on timing and packet sizes, to potentially identify who is communicating with whom using Telegram.

It seems like the developer might do that, but I imagine we can’t have any guarantees from a free and ad-free app that aren’t given

It seems like the reason that cheats were removed is because of public leaderboards