It’s their intended design:
Check out the section about Rivendare.
Oh, almost forgot: if you think they’ve been jesting, it’s probably the “Dontcha guys have phones?” (or what was it) kind of joke.
PS
They probably have implemented this kind of advanced AI, as described above, just in order to make you suffer (for not paying them more, being too smart, playing too well and winning more than you ‘deserve’, not being their ‘big streamer’ poster child or whatnot), moreover, they’re going to rub salt in your wounds with ‘funny’ bits like this and gaslight you, directly or with the help of their devoted forum lackeys, about it, as if you’re paranoid, a conspiracy nut and so on.
Trolls/bots/alternatively smart posters keep spamming the same nonsense… Beep, boop.
And you’ve asked why you should probably stop playing, at least in my opinion.
I didn’t bother mentioning that bit about BGs being P2W (having been for some time, getting progressively more so) last time, the point being kinda obvious, tbh… Apparently, you have realised it, and yet, you have asked.
And that’s a problem? There’s this ‘draft’ mode or whatever, like LOL has done (maybe still do, I just haven’t watched for a long time, dunno, can’t be bothered), so you could still have this hero-picking thing sorted out.
Competitive players probably wanna pick a stronger hero anyway, so I don’t see why this’d be worse than randomly getting a hero you want — or not, with the odds increased (but even then, it’s not guaranteed) in the most predatory fashion for those poor suckers who paid for it.
(Updated and edited a bit)