SpaceX isn't a big name in consumer tech the same way Tesla or those tech giants you're thinking of are. It's less known and even less within the public conscious. Less seen so less talked about.
People on a deep subconscious level understand that they're not in an environment where they belong. They've been robbed of their humanity and turned in to half cog half husk of a person. They've don't and can't live an authentic life but rather a simulation. They're a shark in a tank. They understand that the scientist, the academic, and above all the technologist is responsible for this.
Large well known technology companies are therefore a good outlet of this disapproval. They're viewed as the enemy and the missteps they make that we consciously understand as negatives are amplified by our subconscious understanding that they're existentially damaging to us at their very core. People do hate the tech giants. Tesla though is largely unique in that it doesn't sell to the masses, at least not yet, so criticism aimed at it feels less hypocritical than that of a company whose products and services we use.
That's why SpaceX doesn't get criticised pretty much at all, normal tech giants get criticised a bit, and Tesla gets dogpiled.