Correct. This article reads like someone who has no knowledge of, or familiarity with, trademark law. Trademarks have to be defended or they are lost, and additionally almost all trademarks are applied to a very broad list of things just as standard practice. Even if your company is only making T-shirts, for instance, it would be very common to also have your trademarks cover toys, dishes, tools, and all kinds of other products just in case you might want to plaster your trademark on those in the future.

That being said, the fundamental purpose of trademarks is to eliminate consumer confusion. In order to defend against a challenge, you would need to present to the court strong evidence that there is very little chance a consumer might be confused as to the maker or origin of the goods due to the name. For instance, if you made a line of frozen pizzas and called them 'backcountry style' pizzas, is there a chance that some consumers might think those pizzas were made by Backcountry.com? You've got to be able to show that this is not a likely scenario even if Backcountry.com starts manufacturing frozen foods (assuming the trademark covers frozen foods, I have no idea if it does, but it wouldn't surprise me if it did).

I developed a website for reserving parking near airports and seaports years ago and the site launched under the name BookParkFly.com. Shortly thereafter, the business (I was just a contracted web developer) received a letter from a lawyer representing the people who owned a sorta-similar trademark in the same space for a company called, if I remember correctly, Park 'N Fly. I personally thought we might have been able to win a challenge in court, but the company didn't want to fight it so changed the name and rebranded everything. (It's Book2Park now if you're curious, but I severed ties with them years ago. Before they were featured on Krebs after getting someone else to slap in an insecure Wordpress blog after I told them if Wordpress was going to be used it had to be watched closely for security concerns...)

Trademark challenges aren't "bullying" or "aggressive". They're basic law 101 and really shouldn't surprise anyone in business. That's why you pay an attorney to do a trademark search if you really want to use a certain name.