I’m using it to read Telegram channels without ads and in the same place as everything else (Miniflux), hosting it on my home server. Maybe you’ll find it useful too.
It depends on how their owners protect them. Switching IPs via proxies and changing user agents are well-known and relatively simple methods—essentially pretending to be different clients. However, nowadays, services like Cloudflare often render these techniques obsolete, forcing you to mimic human behavior instead. I don’t have expertise in that area.
You can read any public Telegram feed in your web browser at the URL: t.me/s/CHANNEL_NAME. So far it doesn't look like a problem with scrappe telegram feeds now. Unlike Reddit / X.