I've felt this pain too. 2 years ago I bought a Mac mini (2014 model) off eBay for $340 mainly as a build machine for iOS binaries. It was the lowest end model which had a 5400rpm HDD in it and 4GB of RAM.
It took ~3 minutes to get to a usable desktop. Opening XCode took long enough for me to go grab a coffee or scroll through Facebook. It was swapping like crazy. I honestly couldn't believe they were selling this configuration new for $500 in 2018.
I bought some iFixit tools and used their guide to fully disassemble my Mac and slot in a new SSD. Time to usable desktop dropped to like 20 seconds, things were snappier. Doing more than one thing at a time still uses swap but it's much less noticable now.
This isn't the config for Mac Mini in 2018 though? Unless you're talking about the earlier half of 2018 when the new Mac Mini hasn't been released yet.
Yeah, just that the base 2014 Mac Mini was being sold $500 new up until the point in 2018 when the new model came out. Even by 2016 and 2017 standards, 4GB 1600MHz DDR3 and 500GB 5400rpm spinning disk is abysmal.
I would expect the base model of any product (really the cheapest way to experience macOS without fiddling with VMs or hackintosh) would provide a usable experience and not one where you have to wait several minutes to open Chrome.
I could live with it mainly because I had another machine to go to while my 30m Unity build was running (and because I knew I was going to have to swap the HDD), but for a normal person who wants to browse the web and manage pictures, the $500 Mac Mini would have been an incredibly frustrating experience.
It took ~3 minutes to get to a usable desktop. Opening XCode took long enough for me to go grab a coffee or scroll through Facebook. It was swapping like crazy. I honestly couldn't believe they were selling this configuration new for $500 in 2018.
I bought some iFixit tools and used their guide to fully disassemble my Mac and slot in a new SSD. Time to usable desktop dropped to like 20 seconds, things were snappier. Doing more than one thing at a time still uses swap but it's much less noticable now.