They can, however.
They do, but then again, so do farang men. They become enablers of their mutually unhealthy habits, same as in Western countries.
You can have a fit, hot, good-looking older Thai lady IF you stay fit and healthy yourself (in your own best interests) AND encourage (insist) she do the same. Get her on low carb, in the gym regularly, and taking yoga classes. Takes time to get her on board, but it can be done, 'cause I've done it.
Sounds good in theory, but the younger ladies who'd accept such an older farang tend to be immature, irresponsible, unreliable, gold diggers of the sort prompting so many horror stories here. Much to be said for older ladies who've worked in respectable jobs w/ an understanding of the real world and are more likely to have a modicum of sincerity.
But I agree that it depends on the individual. Just talking probabilities.