While I do find such features convenient, more importantly to me they draw people to a more secure and privacy conscious messaging platform than the ultra-popular alternatives all the while allowing to upgrade to E2E† on demand. Signal completely fails in that regard, as the number of contacts (actual or potential) on it is precisely zero for me.
Anon1096 clearly stated that he was speaking for himself (or herself) but I agree with him: I want privacy but I don't necessarily need complete secrecy. This isn't a zero sum game: Telegram and Signal can coexist and serve different needs.
"I really don't think most users are worried" is the stark OPPOSITE of speaking for yourself.
And you're very welcome to use something that fits your threat model.