correct, requirements change every couple of months and a lot of websites have outdated info, for example to get a residence certificate you don't need a fresh 90-day report anymore, anywhere. A lot of websites still say you do.
the whole thing took me 75 minutes, between 9am and 10:15am, from entering a clinic to get a certificate to obtaining both DL plastic cards (moto+car).
no, you can't. When you're using a credit card - you're not remitting anything, in fact you're only creating a debt in the bank of origin (usually an offshore country). In no circumstances this can be interpreted as remittance to Thailand.
After 180 days in the country, you automatically become a tax resident.
But what most people are getting confused about - being a tax resident and having to pay taxes (or even registering for a tax ID) are 2 separate concerns. No blanket rule, and each case is completely different.
If you are a tax resident (180 days rule) and you remit any money to the country as a farang - you should always ask a tax lawyer if you should pay anything.