everything you hear about why we shouldn't increase blocksize is a bullshit excuse to delay the inevitable. the lighting network will require bigger blocks too....
we simply have to do this, the only thing to discuss now is when, thats all.
core says 1 year because they want the fee market to grow, and get poeple to come to there second layer solution sooner rather than later.
they would have us keep bitcoin first layer always 1 step behind, so that the second layer solution is attractive from day 1.
if you can't see this reality then you haven't done enough digging.