I’ve never once heard anyone ever refer to them as anything other than “Timbits”, just as I’ve never heard anyone ask me to pass them a “facial tissue”, and I’ve never heard of “hook and loop fastener” shoes. The word got genericized.
That was because Tim’s was the only place, that’s since been changed a decade ago and hasn’t been the case since then.
It’s not a genericized term like Kleenex and escalator, sorry.
In every place I’ve been to in Canada and every to every Canadian I’ve known, yes it is.
Other places absolutely can’t advertise as Timbits, that’s a trademarked name.
Don’t make shit up dude.