Regarding the astronomical imprecision of the Old Calendar

The Fathers at Nicaea set Pascha to happen in the first Sunday after the first full moon past the vernal equinox (start of Spring). The Julian Calendar is now 13 days off.

I've got two questions for you guys:

1 - Would you be okay with Pascha happening in Summer? (which will happen in around 10000 years)

2 - Would you be okay with Pascha happening in May? (which will happen in around 5000 years)

If the answer is no to any of these questions, why the calendar being astronomically off 13 days right now is okay and not a thing to be changed?

\* "Christ will already have returned by then, so we shouldn't worry or do anything now!" is neither a plausible statement (no one truly knows) nor an excuse.