Oh I see, it's another try hard again.
Do you realize what forum your on?
I'm not even kidding when I say this, but maybe you should post more on gamefaqs. You're just angry and want to vent, I get it, but dude, you're preaching to the wrong people.
This site is aimed at people who look for solutions for problems and will give you the solution when you make threads like this. It's MOSTLY "try hards" here.
And about your topic. Think it through a bit. If you just block the incoming attack or mixup, you're okay. If you take a grab and attempt to tech it you risk taking 14%. If you neutral duck or neutral jump to punish a grab attempt you could get up to 35% or more if you have a krushing blow or fatal blow ready. The risk/reward is in your favor if you truly are getting harassed often by jumpkick>grabs and you make a correct read on one.
And I know it's been mentioned already, but practically every single fighting game that exists grants a mixup on a blocked jump in. The only reason MK11 has so many more + frames than other 2D fighters is because moves startup slower so they add more + frames to compensate.
Look for solutions man. It's not all about just complaining.