There are already tools for that. Still, might I suggest just skipping manually yourself or paying for ad free access? Creators need to be reimbursed for their efforts, otherwise we'll only be left with those rich enough to do it free or increasingly subtle 'native' ads.
(Full disclosure, I work for a service that helps monitize ad free feeds. Opinions are my own, don't reflect my employer, and obviously I'm biased.)
I completely get that. See my comment above why we decided against having a dedicated feature for this. I'm hoping that tipping (or similar forms) will get more popular in the future and be supported by more podcast creators in their RSS feed.
(Full disclosure, I work for a service that helps monitize ad free feeds. Opinions are my own, don't reflect my employer, and obviously I'm biased.)