12 months isn’t a bad life for a pair of rims if you weigh 100 kilos. And would you really want to sell them on with an issue you know about?
I’d dispute this. I’m over 100kg, clumsy and my road rims have always lasted until the pads have worn through the rim. My lack of finesse is evidenced by the fact I get less than 1000 miles for a rear tyre.
The CXP23s on my lightest bike are 16 years old, have been ridden to Rome from London (including Strade Bianche), used on commutes during the summer, probably done >20000 miles. And won a couple of ‘sporting’ time trials.
I build my own and use a tension meter. For the OP, a tension meter might be a decent investment.