I cannot disagree more. The open source core is very featureful for its price, it's easy enough to host on premise and UX is very good.
Granted, the paid version has some nice features and there were some problems in the past when people wanted to integrate features found in the paid version to the open core but that's the price of living in current times. Money is still needed to create and maintain something.
Maybe one day when we start living in a Star Trek society.