(Caveat that "standard grammar" in English is generally bullshit made up to sell books to status-conscious Victorians, even if it has some use in communication. Perhaps a more accurate way of putting it is "common usage.")
I see it increasingly with my students. Also “casted,” - best read is that a lack of focus on grammar in K-12 has led to confusion regarding irregular verb tenses
I'm sure that if I traveled 200 years into the future I would be hard put to understand "standard grammar". The rules I worked so hard to learn as a child now mean very little. Right or wrong, they still shade my snap opinions.
One of my biggest linguistic pet peeves is the notion that the only participants in linguistic drift are the people who want things to change, that everyone who pushes back because they think it's a bad change just needs to sit down and shut up.
In fairness (and speaking as a copyeditor), some of us do need to adhere to standards in order to facilitate clear communication between creator and audience.
One of the joys of my undergrad degree was reading a grammar by Robert Lowth and finding places in which he did exactly the things he was telling people not to do, often in the same paragraph, because the "rules" of grammar are bloody awkward to use in some cases.