Is there any reason to use Telegram rather than the superior Signal?
I already use WhatsApp for anyone who doesn't have other messengers, and that covers everyone not on Signal or Telegram.
Is signal cloud-based? (No) Does it need a phone to work? (Yes)
Can you send files? (somewhat)
What are the maximum sizes of groups? (10 members).
EDIT:
"Signal also requires that the primary device be an Android or iOS based smartphone with an Internet connection. A desktop app that can link with a Signal mobile client is also available.[9] As of March 2019, Signal's desktop app does not include support for voice or video calling."
Signal has 100mb file size limit, telegram is 1.5gb
Signal has 10-member group limit, Telegram has 200,000.
Lets ask this the other way - if you dont care that some russians may possibly have access to non-secret messages, why would you prefer Signal?