Same approach here in Spain. We have around 30-40k new cases per day and the healthcare system is managing pretty well. Once you get around 40% of the population fully vaccinated, starting with the elderly and going down age group by age group, severe illness, hospitalizations, ICUs and deaths go down fast. Here we are at around 55% fully vaccinated, it's going fast and considering the low number of anti-vaxxers here I think we will reach 80-90%. I think Italy is starting to ignore new cases as an important metric as well, and that makes sense on countries with advanced vaccination programs IMHO
Back to Thailand, I think we need to stop looking at the past and blaming the goverment and start looking at the present and future, focusing on solutions no fingerpointing because that won't help, will only put the goverment more nervous and on a defensive position, and what they need now is focus. There's almost no country in the world that has not made obscene mistakes on this so let's move on.
In terms of strategy, I believe it's a mistake to focus so much and almost only on vaccines. No matter what the goverment does, it will take months until Thailand receives a stable and sufficient amount of vaccines and design the logistics to innoculate them fast and efficiently. So a strong focus must be put on what to do in the meantime to reduce deaths as much as possible and limit damage on the economy. They need to increase testing of people and drain waters to anticipate clusters, tracking positives and close contacts, print baths and estimulate the economy, control the borders, invest on equipment (i.e.: ventilators), apply strong measures to reduce movement around the country...Many many things the goverment must do beyond vaccination.