Scalability problems sure, bitcoin is hardly struggling to innovate though. Rootstock, Schnorr signatures, mimble Wimble. These are awesome new technologies.

Scalability problems sure, bitcoin is hardly struggling to innovate though. Rootstock, Schnorr signatures, mimble Wimble. These are awesome new technologies. Every coin today would have the same scaling problem bitcoin has if they had the same user base and amount of attacks going on.