What does "collapse under their own weight" mean in the text?
Thanks.

Sehen Sie eine Übersetzung

It's a little hard to tell without more context:

To collapse under somethings own weight means that something destroys itself just by existing. For example a very tall building might collapse under its own weight (the upper part crushes the lower part and the whole thing falls down).

In this sentence "to collapse under their own weight" might mean that the rules based approach is inherently contradictory. It leads to some logical error and can't exist. Alternatively, it might mean that the approach too complex and confusing to use.