Telegram, you will remember, enjoyed complete protection from Amazon when the Russian regulators went after it. I don't remember if it even was removed from the Russian versions of Apple's and Google's app stores. Also, Telegram had an advantage of already being quite popular, including in the circles that put on a performance of hunting it down. Imagine for a second it received similar treatment as Parler did.
P.S.: the banner, by the way, gets shown on the website of RT, aka the mouthpiece of the evil empire that wanted to expunge the valiant little messenger from its territory. The irony.