@Vlad *****
Geez you are a pedantic one.
The fact is BOTH visa types state "employment prohibited ".
If someone was picked up for working online on a DTV, a not so well informed officer would initially be confused by where it says "employment prohibited" and potentially threaten legal action.
This is no different to those on a tourist visa.
In practice, Thai authorities have relaxed the online working restriction provided you don't work for Thai companies or have Thai clients.
They're not going to go after anyone working online and check their visas.
This would cause numerous issues affecting Thailands reputation
Not everyone needs a DTV. Only those seeking to spend extended periods in Thailand do.
Your average tourist can come to Thailand for 2 weeks and still take phone calls and send emails from their hotel room during their vacation and no one has ever had issues doing this.
Even if there were such stories in the past, there won't be anymore.