They're trying to imply that fresh accounts might be used to steer opinions, IOW, they're trying to imply that you are a politically motivated kind of bot...
I agree, its a rather shady approach. But here you go, we'll get more and more of this, its a conveneient method to discredit discussion partners with unwanted opinions.
Except mine is not a fresh account though. THis is just moving the goalposts in search of vapid things to discredit people for unpopular opinions without arguments.
Calling people whose opinions you dislike but can't refute as "bots" is the lowest of the low copes of losing arguments.
Not accusing you of this, just pointing out the hypocrisy of those doing it.