Yes. Here's what came out of the owner's forum:

It is a problem. Many of the major insurors adopted underwriting
guidelines recently, claiming they have done this to limit exposure,
presumably as a response to major hurricane losses. I wrote quite a
lot of sailboat coverage, including my own Endeavour 32, thru Safeco,
and they adopted guidelines that do not permit binding coverage on
boats over 26' in length, older boats, or wooden boats.
Unfortunately, other companies have also followed suite and finding
reasonably priced coverage has become more difficult. I am just now
getting into trying to identify companies that will write this type
coverage myself

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Roger Long