How safe are honeypots/minipots?

I started wondering how safe the redirection to haas-app.nic.cz is. For example if someone skilled could escape honepot and gain root on the router/cznic server?

AFAIK the honeypots are just https://github.com/cowrie/cowrie rebranded. Am I right?

That risk was an important reason why the router only proxies everything there and back, instead of attempting any analysis itself. (or so I heard long ago)