Most pyrolytic ovens still require the wire racks, rack mounts, and sometimes roof liner to be removed prior to a pyro cycle, so that is a constant. As for the oven cavity itself the pyro cycle works very well and I would never ‘go back’. Some pyro ovens (a small minority) do not require the ‘removable parts’ to be taken out prior to a pyro cycle. If left in they will one or more of degrade, change colour, and/or have a short life even though they will get clean.
There is an older topic about problems and installation issues some members have had with them and is a more appropriate topic for any followup to your question.
