For some manufacturers it matters more than others. Sony doesn't support their cameras much after launch. They could theoretically update some color science (so

For some manufacturers it matters more than others. Sony doesn't support their cameras much after launch. They could theoretically update some color science (something that does matter) or add some minor features, but I've never updated my A6100 and I don't think there's any updates available anyway. To contrast, part of Fujifilm's market value is in their "film simulations" which are effectively more advanced LUTs that (mostly) attempt to mimic different film stocks, and Fujifilm has been known to have good long-term support for bringing new features (including film simulations) to older cameras through firmware updates. For example, the Fujifilm X-Pro2, released in 2016, received a firmware update in September of 2020. It only optimized performance for a newer lens and fixed some bugs, but the fact it got anything at all 4 years after launch does not appear to be the norm.