To add more info - someone made a 3rd party app called Para, which allowed Dashers to see their tips in advance so that they don't lose money on a delivery. You wanna tip like an asshole? It's going to significantly increase your delivery time as Dashers ignore your order because they LOSE MONEY when you don't tip. Like with a regular restaurant (in the US, which I believe is where Door Dash, the base "pay" is negligible and the true earnings com from tips. (Which is terrible and needs to change anyway.)
Well Doordash made a change to their own app so that Para no longer works, rendering tips invisible, and a major risk for drivers who might lose money on a large, or longer distance delivery.
I'm not going to tell you "don't cross the picket line" because we live in a very different world, and this is a very different situation than a bunch or workers LITERALLY PICKETING (that's where the phrase comes from if you've ever wondered) outside a factory. You can't expect a massive response from customers when the only way you might actually find out about it is a Tumblr post.
If you're in a position where you still need or want to use Door Dash for a variety of reasons, focus on tipping well and making sure the driver gets paid properly for delivery. Be prepared for long wait times and yip the shit out of people. It wouldn't surprise me if half the people reblogging this and patting themselves on the back for solidarity still don't tip worth a shit as is, and won't change when they go back to ordering. Do more for workers with your actions than your absence.