If a) I can work from anywhere, and b) many countries will let me stay 6mos with a tourist visa (no need for application and meet requirements). Why would I choose a friggin cold and expensive place?
A "tourist working remotely" visa fills this obvious gap, without the implication of a proper work visa that you are taking a job away from a local (what they local authorities are mostly concerned with).
I doubt there is any tourist visa that explicitly prohibits working for a company in another country. Were this true, everyone checking their work email, or taking a work call, while on vacation, would be breaking the law.
I can spend 6 months in the UK per year, but I can work no more than something like 30. Here is an old chart: https://assets.kpmg/content/dam/kpmg/pdf/2016/01/statutory-r...