Overall, it gives the impression that this person actively searched for something to feel insecure about and then wrote a looong article about it.
Also, it's weird to label mincing garlic yourself as snobby, when it's the cheap option done by almost everyone. Forget about finding jarred garlic in a pleb fridge. Hipsters with creative eating habits? Much more likely. And for people without applicable disabilities, jarred garlic doesn't save all that much time. Time spent mincing garlic barely registers compared to other activities in the kitchen. And jarred garlic is A LOT more expensive[1]. But if you have disabilities, it may be the rational choice, yup, no argument about that. And even when it's not the rational choice, who cares?
When I cook, I don't check on Twitter if my way of cooking is approved by snobs. Go on detox from Twitter. Your life will get much better than by fighting imagined ableism.
[1]: No surprise here really. Fresh food is almost always several times cheaper than processed food. After all, it's less work to make it.