Maybe he is getting confused with the 40,000 bht a month proof of income, if he does not have 400K in the bank. They would then need to see 12 months statements.
They have had a lot of problems with keeping up to date with hotels that have closed due to Covid. I booked a hotel in Chiang mai about a month ago. Paid by credit card, had the voucher issued and when I got there the hotel was closed up with a notice pasted on the door saying it would open again next month! Luckily it was a simple matter to walk around the corner and book into another hotel. However just imagine if it had happened to a couple of weary travelers coming on holiday from another country.
From what I have seen immigration always wants to see your Thai wife when you apply for the one-year extension - so if you're having problems with your wife then you are probably okay visa-wise until the renewal becomes due.
You may also find that all of a sudden the woman has a lot more injuries, and her bike suffered a lot more damage, - and the rich farang will pay for everything!!!
Try your embassy! You can get married there without your wife being present. Then take all the documents to the local Amphur office and you can get a Thai marriage certificate the same day! But you may need to make a donation to the local orphanage.