It’s because the original image macro that this is based on was about piracy, saying something along the lines of “I bring a certain ‘just torrent it’ vibe to the conversion that the riaa just doesn’t like.”
Their reuse of the macro is indirectly an answer or a continuation of it that can be seen as acknowledging the original message.
Telegram’s server side software is closed source, owned and ran by them exclusively so they really have no room to talk. WhatsApp doesn’t even have OSS clients so they’re even worse in that regard