Not saying those cases don't exist though it does not appear on a massive scale at all. Also this guy Sounds dodgy. He keeps on repeating his agent and mentions his phone number on many occasions. It sounds more like someone pushing agency services than anything else. I light be wrong but generally I have a pretty good hunch about snake oil salesmen.
Yes I understand what you're saying. I also realize that potentially everything we come across online may be suspect.
As two of you here pointed out, this could very well be a fake, misleading post.
What is concerning is that there's a constant inflow of information like this, with at least a few students posting nearly daily that they've entered with fully online classes & weren't asked anything at all.
For example, here too, the OP's wife was allowed entry with online classes without being questioned about the "essential" purpose condition. Whereas OP was sent back saying presence is non-essential.
I know I could be totally wrong in assessing these things now. I wish I could get some clarity from IRCC on their website.