@André *****
DTV is essentially a 'special' tourist visa, no matter what you consider it to be.
Behaving like a tourist/nomad on the DTV is definitely not misuse. Moving around and in/out of Thailand is the expected behaviour.
People who apply for the DTV under false/misleading pretenses (never intending to attend the course they booked) and then just living in Thailand probably does constitute misuse.
It is not a long term visa for residency, even though we can (almost) use it for that.
Having said all that, I see no reason why the DTV would not continue (they may remove the soft power categories), but you would almost certainly need to apply from scratch (as per your OP), in your home country, rather than extend.
I also applied under the Workcation category which is a perfect fit for me. Things may change for me within the remaining ~35 months, but it's too early to tell...