My question was aimed at the "not able to spend from that hardware wallet itself" as I heard about an instance where one alt was DNS for a few days from a known issue, with the software, for the hardware wallet which was fixed later by the company. So this is more of a case where none of the hardware wallets from that company would work due to a software issue.
Oh, I see. Maybe I can even guess which altcoin you are talking about but it's not important for this discussion.
In case hardware wallet #1 has an issue with a particular coin, how do you know that wallets #2 and #3 don't have the same problems? If the coin changed something on a protocol level, an update or a fix needs to be released by the wallets that support that coin to continue interacting with it in an uninterrupted manner. Some wallets could fix the code in a day, others might need a bit more time. Patience is a virtue in that case. Maybe there is a temporary workaround that you can use until your client fixes its main software. Like you said yourself, they fixed it in a few days.
If you were impatient and hurried to buy a different HW, you would have just wasted money. Chances are that the fix would be released before you new device is even shipped to your home.