I agree, it is my opinion. I've struggled through 15 years in Thailand without one, and at times it was desperate, but I've hung on in there. I've always been mindful of not wanting to associate myself too closely with Thailand, and with the rumours being spread by tax agents touting for business about taxing expats, I'm happy I did. Although I will fall into the Thai Tax Residency bracket through number of days, the DTA will trump that and keep my Australian Tax Residency, meaning I will not have to pay tax in Thailand. All I've got to show for 15 years in Thailand is a bank account, a TEMPORARY extension of stay, and a 12-month lease. That suits me fine!
If you're not going to an immigration office for anything else don't even worry about it. No-one is ever going to request it unless you visit immigration for an extension etc
The one "everyone is talking about"? Sorry, I've just got to laugh at that one! There's no changes to any rules affecting retirees. The only change is the removal of a loophole which enabled rich Thai people to defer remitting money to Thailand and avoiding tax. A most ridiculous rule when you think about it. Pensioners have always been protected from Thai tax by virtue of DTAs. Sadly, the "tax experts" have jumped on this and are spreading fear amongst retirees in order to scam them out of money with their "advice". Take no notice. Nothing's going to happen! 👍