I and most Thai folks I know would probably rather see the aforementioned 70 year old pensioner, especially if he's the jai dee sort, become a Thai citizen in due course, than see a pompous, uppity, ageist twit who couldn't hack it back where he came from singing the Thai national anthem.
That's how it works in most Western countries; marry a citizen and become a citizen yourself after a prescribed time period.
By the way, why such an axe to grind with older fellas who still have a sex drive?