You're fine. I agree completely with RickAir here.
When you are building time it is actually expected that you will move jobs to acquire the necessary experience.

What folks are talking about when they say "don't job-hop" is lateral movement. Meaning exchanging one job for the same job at a different company. Too much of that indicates a problem child to the airline.

You haven't really job-hopped in the sense that each move you made was to increase your experience; multi-time, 135 time, etc. You were actually stair-stepping upwards. This will be evident in your resume where you describe your duties and what you flew at each job. No worries.

Were you are now is simply due to circumstance. Completely understandable and reasonable.

If you don't currently have the requisite multi-engine hours to apply to 135 or regional jobs then yes, absolutely look for a job that will give you more multi time.

I think it's important to remember why people progress through jobs to get to the ultimate job they want. This goes for any industry, by the way.
You start with fundamentals and gain the experience that paralells the next job which is a little more challenging. On and on until you reach your ultimate goal.
So, not knowing where you are with experience level, what are you qualified to do now? What do you need to get to the next level? There lies your answer of whether or not to move jobs.
Jobs are scarce these days - but they are out there. If I were in your shoes I wouldn't give up looking for a job that makes me more competitive in the long run.

Hope that helps,
Lori