Thailand cannot afford going into lockdown.....fact!
That's the reason why they opened early, that's the reason why theyre monitoring incoming numbers on a weekly basis. Thats the reason why there's now talk of 10 day quarantine and extending visas the extra 2 weeks so it doesn't turn off potential visitors on returning.
And those who've experienced this (prior to the "rona") that the Thai government thought they could survive without certain long term stayers, staying.