[uecker]

Not much, and people also should not to do this. One should at least have a check of hash of the download vs some document signed with a key.

In any case, the curl|bash from a website is way worse as it leaves no trace. Here, you have an artifact, and multiple steps, so the probability that an issue can be detected is higher and when someone gets compromises one has a change to figure out what happened and warn others. (so good practice to copy the file somewhere else). People look at this only from purely "can I get compromised" perspective, but overlook this community aspect.