IMHO, as long as the original remains available, it's fine.
Changing with the times for the sake of relevance and sales is the the right of the copyright owners. Preventing them from modifying the text would be akin to preventing renovation of old apartment buildings by new owners.
That said, I do think it is important to be reminded of how authors viewed the world in the past. We should be reminded, at least tangientially, that governments of the past colonized and recall the lessons learned from that practice. I.e., let's not forget and be destined to repeat what came to be loathed.
Changing with the times for the sake of relevance and sales is the the right of the copyright owners. Preventing them from modifying the text would be akin to preventing renovation of old apartment buildings by new owners.
That said, I do think it is important to be reminded of how authors viewed the world in the past. We should be reminded, at least tangientially, that governments of the past colonized and recall the lessons learned from that practice. I.e., let's not forget and be destined to repeat what came to be loathed.