I am a 35+ year veteran of IT.
No, there is no “update” problem with Twitter.
I’m recalling an article I read on the sale of Twitter that opined that it could never make money because anytime anyone tweeted the whole system had to update and that the amount of power that took made profit unlikely. They used a name for the type of system. Not being terribly computer literate I don’t recall it. Seemed plausible.