xyzulu
Hi xyzulu, I also understand your point of view but I don't share it because everything always depends on the target you are referring to.
If as a target we are referring to a user who manages his 4 or 5 low-traffic websites, a simple shared hosting plan will be enough for him and therefore for this target user it makes no sense to talk about NGINX vs OpenLiteSpeed or MySQL vs MariaDB or Redis vs Memcached etc., etc., this type of user only needs a point-and-click system like Windows, let alone if you can talk to them about Linux.
If, however, we are talking about medium and/or medium-large Agencies that manage hundreds and hundreds of websites or if we are talking about medium-small and/or medium-sized Companies that sell Shared Hosting Services, VPS etc., etc., then the matter changes and also the closer you get to vertical scalability, the better it is both in terms of costs and reactivity in the services offered.