Lol no.
You can get some extra info from the thread below, but basically, you could have 20 kernels installed and still have a working system. Your updates would take super long, though, so don’t do it. 
It’s just that the LTS (long-term support) kernel is, in most cases, more stable for updates, while in a few cases, it may sacrifice compatibility for new hardware or drivers, but this is for brand spanking new hardware mostly.
But again, having only one kernel to boot from can be bad at the wrong time. Like if you did an update before bed, woke up the next day and found you need to do some work real quick, but your device won’t boot. Having another kernel may allow you to just boot and continue like normal. Whereas, having only one could mean having to use timeshift to use a system snapshot, which takes time unless you are using GRUB and BTRFS.
https://forum.endeavouros.com/t/how-to-run-a-stress-free-endeavouros/49769