Who's to say this company doesn't just file bankruptcy or the founder disappears with everyone's capital.

If you sue, and have to "prove" that the neighbor was negligent, then that would likely need to consist of multiple “written” communications from you, the city, or an arborist to your neighbor stating that you/they feel the tree in question is diseased, appears to be dead/dying, is overgrown and posing a potential threat to your property, etc.

Im new here and recently  saw a threat about housing for insurance companies .

One day in Q2 I disappeared from their algorithm.  

They are also very unresponsive, you'll get a lot of upfront communication while you're signing up for things and then they disappear. 

I will invite the syndicator to confirm or deny the threat publicly.

All the others were one-offs and they disappeared.

The monthly payment all in jumps from $1346 to $2400 (making the cashflow disappear). 

There will always be demand in the market (it's not like some covid markets that could disappear as vacation destinations almost entirely over the next decade), and the regulation risk is as near to zero as you can get in this industry so long as you buy in the approved tourist zones (again, compared to some smaller/less mature markets where they could outlaw STRs tomorrow).For short period cash flow there are better options. 

Remove the source of moisture and the mold will disappear.2.