With this line of reasoning, would you be in favor of getting rid of the minimum age for running for office?

As long as the candidate had reached the age of majority, yes, I'd be fine with the few minimum age restrictions that exist being removed. In the 18th century information spread slowly and very unevenly. If a 20 year old wants to run for the Senate and the people of their state want to be represented by a 20 year old, I'm fine with that. There's no hiding that a 20 year old is 20 years old.

I agree with this reasoning, but the two party system + our primary process means I have limited say in the options (and rarely like them).

The remedy for this is ranked-choice voting, not legislating against the types of candidates you dislike.

Totally agree. I guess I’m just feeling desperate b/c I don’t see a path out of our current political structure. Maybe liquid democracy could overcome the impasse?

One of he problems with getting out of our political structure is that most people are afraid of too much change at one time. That’s why Biden will have won the Democratic nomination despite being significantly to the right of his own party. Even good change can be scary when you have a lot to lose.