Gosh, don't worry about it.
Some people get so opinionated on this topic, and love to clutch their pearls at the way other people do things. Odd.
DS was 3.3 when we did him. We emigrated when he was 2.3 and had a couple of house moves after that, so wanted to be relatively stable when we eventually did do it.
I used the Gina Ford method - am not a Gina Ford type at all - but thoroughly recommend her for potty training. Essentially, you make a decision to go for it, do a little bit of preparatory work, and then follow through, unless your child absolutely show signs of not being ready. DS was dry in a couple of days, but really, really struggled with No. 2.
After several weeks of this, I decided to try to train DD who was 2, and seemed ready. Probably because she'd been watching her brother. Again, used the Gina Ford method, and she was trained fully in about 3 days - wees and poos. And as I hoped, it all clicked into place for DS too.
Nobody fully understand your individual child and family situation, and all the other things going on in your life - and so to come out with blanket statements like 'lazy parenting' if you haven't nailed it by X age, is honestly so unhelpful. Ignore people like this. :)