It’s nonsense. You answered your own question in the OP.
most of the CVs I reviewed were over 2 pages – didn’t bother me at all?
A CV is as long as it needs to be. If you’re a school leaver applying for a job filling shelves at ASDA you’ll probably struggle to fill two pages. If you’re applying to be a Solutions Architect at Google, it’s likely to be a bit longer.
I’ve seen CVs written in Flyspeck 3 with no margins or white space so that they can achieve this legendary “two pages max” holy grail and they just go straight in the bin because they’re unreadable.
Be efficient with your language, state your points without waffling on, and prune anything that’s not relevant. This was whole point of the “two pages” mantra, people won’t read a telephone directory and shrinking down the font doesn’t reduce the amount of text one jot.
If it’s two and a bit pages, I wouldn’t lose any sleep over it. (Mine was four at one point, about 2.5 – 3 these days.)