I feel like they attack from the wrong angle. Consider BareMetrics an SAAS. They aren't really just a CRUD, but are lumped in with CRM's. The easiest CRM is a spreadsheet and a mailer like SendMail.
Many organizations have used Excel as a CRM and then hit a lot of problems. It is very hard to scale up and also hard to add features to if you need them.
What I'm looking for is something to replace external CHAT systems with something that stores all the data in our systems, replacing Intercom or whatever else.
That's our goal too. We pushed out this simple CRUD first for commenting and private support chat/email. We'll add realtime chat functionality later if needed. Currently, we are doing fine without it.
Not sure what this article was trying to get at. If a SAAS service could be replaced by a single line of code, then you did not need to use it in the first place.