Telegram responded to the allegations the following day [istories.media] - and in doing so made some glaring contradictions with what they told the court in Miami, USA.
More recently Meduza [meduza.io] published a detailed story about both those iStories reports - the highlight being the revelation that "as part of a criminal case opened by Russia’s Federal Security Service (FSB) in the spring of 2022, security agents have been intercepting Telegram messages."
Security researcher Michał “rysiek” WoźniakA published a detailed report titled Telegram is indistinguishable from an FSB honeypot, which provides more information on how Telegram has been compromised