I agree that Honda isn't really a luxury brand, but I'd say it is good news. Maybe not so big, but we need some of that positivity.
Even if this was some small Chinese brand that I'll never buy, I'd be happy because this goes in the news and people read about it. IMO it's a matter of time before Tesla accepts it again.
I'm not saying that the news isn't good, but far from anyone needing to get too excited about it, because we see from past similar events that people are simply not interested in using Bitcoin as a means of payment. Such news has had almost no impact on the market before, and I doubt that it will have any impact now, either in the short term or even less in the long term.
In a year or maybe less, the news will appear that Honda has decided to remove that option, either because someone will suggest that Bitcoin is
"harmful to the environment" or simply because no one will use that payment method. It sounds pessimistic, but unfortunately it is the reality.