Eh, I'm not particularly a fan of mocking the elderly for their inability to go up or down inclines of varying levels of traction. I didn't find it terribly cool when people mocked trump about going down the ramp, and I don't find it terribly cool doing it about Biden. They are men in their mid to late 70s, they are likely wearing slick, dress shoes, which are notorious for having shitty traction. I'm not really going to mind if they stumble, or walk cautiously over inclines. They're fucking geriatric people, stability is one of the first things that declines as you age, assuming you are aging well, without any complications due to other conditions.
Mock them for their policies and views all you want, but try and have some more class than to literally be MOCKING THE FUCKING ELDERLY for being elderly. You don't look good doing it.