Because like 30% of the websites in the world are on WordPress, and countless others in custom PHP? Not exactly a trivial task.

Claude please rewrite my entire WordPress site as an OCaml Mirage Unikernel that runs directly on bare metal, no Linux.

I bet that takes a week at most.

While at it, create a custom firmware for the BIOS to utilize the CPU more.

In fact, design an FPGA that runs my wordpress blog about my stamp collection in pure hardware. Make no mistakes.

The flaw in that ideology is that everyone relies on the next generation for care in their old age. Taking advantage of the future generation without contributing to raising it isn't selfless in the slightest.

If you live in a developed country you probably already have a demographic crisis. Not having kids is hurting the next generation, not helping.

It still baffles me that some have children to have someone around them when they're old

How is it a flawed ideology? There are a whole lot of places around the world who have people that want to help, allow them to help and pay them appropriately and at the same time make it easier for folks to live longer and more productive lives without the dedicated assistances of others. It's almost like 'community' means not just for the young.

There's still a cost/benefit to building and maintaining a service. LLMs make it easier to build, but the cost does not scale to zero.

I'm in agreement with your claim, though if you recall some of these micro SaaSes went hyperfocused on niches. The value proposition is then smaller, with larger data liability than with some behemoth's of SaaS.

Though for the later ones, one might also ask themselves if they are worth their cost when using 20-30% of provided functionality.