Can’t fault the cooking school for being cautious!
I’ve had my visa approved but not worried about serious criminals using it who are likely to be a tiny minority.
I am more nervous it will be abused by lots of petty criminals or people doing things a little bit naughty so instead of young / middle aged professionals that do work remotely, it will attract people who work in illegal casinos, scam call centres, sell drugs, etc. or even work illegally in bars, restaurants, tour operators, etc.
The entry criteria is quite low and sure it won’t be long before stories come out and all DTV holders will be looked at with suspicion.