Granted, some Immigration Offices will not issue then for a tourism entry stamp but the ones in the tourist areas and many others probably do. I'm pretty sure everyone that has recently posted after getting one was not just Bangkok based. Which agent do you work for BTW?
"Basically an METV would allow me to leave and renter Thailand to give me 150 days I need " this is the only correct statement you made but whether you can get one without travelling "home" is a different matter