For those with a monthly income stream the 65k transfers makes far more sense. Best interest you get in a Thai savings account is 1%. That's insulting. But many don't have the necessary monthly income. I use the 65k monthly transfer method. Never missed a beat. You just have to remember at the beginning of the month to make the transfer. I never forget because I'm just about out of money by then!
The 65k suits me. It's no problem for me to spend a solid five minutes each month transferring money to live on, which has the double effect of also satisfying extension requirements. I have no desire to tie up 800,000 for the rest of my life, costing me 88,000 baht tax free each year. That's how I roll. I'm retired, and I LIVE my retirement, not EXIST! So 65k per month fits my lifestyle just fine. Others are different and it's their choice. Even those with 800k stagnating in a Thai bank account need to bring in money to live on, so I can't quite see your logic