In my opinion it depends on what compounds you were using, what your goals are, and how easily and well you recover.
The time on time off thing is bro science IMO. It is based on how long it generally takes people to successfully pct and recover but it doesn’t take into consideration what compounds and doses you were using.
Some guys run 1 cycle a year other 3-4 and are completely fine. You need to do what you feel is best for you and fits your goals. Personally I think if your going to run more then a couple cycles you should look into blast and cruise.
As for trt/blast and cruise I see no issues with people who do as they wish as long as they montior bloods and other health issues. Some people perma blast I personally can’t do this because I need a break mentally in between cycles.