Breitbart is to the right as HuffPost is to the left. Not to be trusted.
But to the original question - do we have any actual facts or are we all just breathing hard?
It's real--from a trade journal and WSJ
https://www.insurancejournal.com/news/national/2018/05/03/488026.htm
or perhaps the Wall Street Journal
https://www.wsj.com/articles/new-york-bans-nra-insurance-program-and-fines-broker-1525273379
And apparently they are "investigating" other companies as well from the insurance journal.
This, along with other companies actions (both Lockton and Chubb have announced that they are dropping NRA affiliated insurance policies) and similarly finance industries (Citibank, the bank that offered the NRA credit card, etc.) are doing the same thing to gun retailers and manufactures as well as the NRA. It is a coordinated "hit" on any companies or organizations that might indicate any connections to firearms.
Since government action is stymied at the national level and at most state levels, activists including investment banks and large institutional investors (pension funds) are targeting businesses to avoid any association with gun owners, retailers, gun manufacturers, etc. Many of these are soft targets that simply want to stay out of the news. The intent is to make businesses do what government refuses to do. The purpose is to cut off, demoralize, and demonize firearms owners and sellers engaged in lawful trade.
Think "New Prohibitionists" with many of the same character types leading the charge. The thing is that alcohol was never explicitly protected under the Constitution, unlike firearms, thus, these folks are really opposing the exercise of constitutional rights. A similar attack is undergoing on the First Amendment where only approved opinions may be exercised.
A lot of people are cynical and simply say that "it is a NRA attempt to raise money" or "they don't really want to ban firearms--lets throw them a bone and then they will go away", or private businesses should be able to do whatever they want and discriminate against firearm owners and firearm related businesses, etc.
Think of gun control activists as wolves--as a pack, wolves operated to take out the weakest in the herd first--when confronted by the sheepdogs, rams, etc. they lurk waiting for an opening. Thus, much of the silent war to protect your rights is in the shadows and fought out in editorial press offices, quiet lobbying members of legislatures, very rich individuals with open checkbooks, secret campaign promises to campaign donors, ngo planning sessions, regulatory agency hearings, the actions of state, local, and federal bureaucracies, and in business boardrooms and executive suites. The textbook republic no longer exists as such and that is why if you want to keep your rights then you must fight for them even in your everyday actions. With a pardon to Benjamin Franklin, we must all stand together or be hanged separately.
Else, like every other republic in history, it will fail and be replaced, most usually by something worse--an oligarchy or a tyrant.
