1. Probably not mate , not impossible but 90% not.
2. Yes that’s true , but like the other comment here , everyone’s circumstances are different. Depending on where you are from they will probably have a tax treaty with Thailand meaning if you pay tax in your own country you won’t pay it in Thailand.
I’d advice you to speak to a proper tax advisor about your circumstances 👌🫡
To transfer a Thai visa to a new passport, you'll need to visit a Thai immigration office with both your old and new passports, along with a copy of the visa and other required documents. The process typically involves having the immigration officer transfer the visa stamp or sticker to your new passport.
the first page where you upload your bio photo that’s all you need to do is one page.
But when you submit your other documents like bank statements ( supporting docs ) you will upload all photos of passport pages (if asked) if they don’t ask for it do sent it