I have been to Taiwan many times and on my first trip i was 55 yo. There were many very good looking guys wanting to meet from the apps like Hornet and Grindr. My type is a slim twink and there was no shortage of them and no money was involved. By staying a month and travelling around Taiwan it was possible to make many new friends, gay and str8 who i will go back to visit again soon. It was not only the sex but the lifelong friends that i made in Taiwan that make it so special for me.
I am now 65yo and i did notice as i got older that i was not meeting as many guys on my trips. I believe that you should be able to meet some nice guys from the apps and make some new friends. I often saw older foreigners above 65yo with Taiwanese guys out on dates. I suggest that you include some sightseeing on your trip to Taiwan if you go as it is much more than just a destination for sex.