I've been making Drupal websites for 15 years, and especially lately now that its code is modernized wouldn't touch WordPress for any reason... but simple Drupal is not.

It can be very simple to administer if the site is built right, but someone has to get it there and that takes some budget.

Anyone in OP's situation I push towards Shopify/Squarespace.

Drupal has a steep learning curve. My personal website is on Drupal and now it is a nightmare even to upgrade it. I wouldn't recommend Drupal unless you have technical skills. It is not plug-and-play.

I once ran a Drupal site. Soooooo much more complicated than Wordpress. Definitely not recommended in this case.

Drupal has the exact same problem.

Well if the issue they have with Postgres is complexity and dealing with plugins, Drupal is not going to help. It’s way more complicated and IIRC it’s plug-ins all the way down.