Wether Telegram cares is beside the point. The original comment explained why Telegram is inconvenient for the CCP, to which you interject that it is not E2EE. All conversations on Telegram are encryted in one way or another, which is a major problem for the CCP, and people who desire privacy and use Telegram are likely to go out of their way and use the E2EE feature as well. Regular chats being decrypted in the backend is uncool for sure, but if you live under an oppressive regime that murders dissidents and their families, targeted ads are the least of your worries.

Telegram may not be good for theday-to-day privacy needs of the West, but it's pretty great for fighting oppression. Not only is it encrypted, no other encrypted messenger (that I know of) has the organisational utilities that Telegram has, such as channels and 200k groups. If I had to organise any sort of dissident activism in an oppressive, censorship-happy state, I'd probably use Telegram.