Absolutely. I wouldn't suggest one shouldn't use a Pi if it fits their use case and budget, simply that once we get to a higher end Pi, it can be cost effective to simply buy a mini PC which will be more capable for not a lot more money.

The issue with competing ARM SBCs is the software support; Radxa makes some boards that are more powerful than Pis, but if you read the forums they've had hardware flaws in the designs, and they run old kernels and don't get updated, and of course there isn't the community behind it.

An x86 mini pc is a different beast to a Pi, but then I think a lot of people who were hosting software on a Pi weren't specifically looking for ARM architecture anyway, unless they were, in which case stick with a Pi.