I think we need to clarify on terminology first. We've never been time-linear in terms of rewards. Early voters always got more curation rewards than later voters. The planned change will make that not true during the window. I think some form of window here is valuable, because it makes some sense to reward early curators for doing the work of discovering content for the later votes.
However, you may be referring to a truly linear reward curve proportional to the amount of stake voted vs the change done by Vandeberg that nerfs the rewards for very small votes, making a quasi-linear curve. I've never investigated that issue much and therefore don't have much of an opinion on it , but I know it's been unpopular with some people. I'm not opposed to having a discussion about it (or maybe just a pointer to past posts on the subject), if this is the reversion you're suggesting. I suspect such a reversion wouldn't be difficult, so it's probably mostly a matter of weighing the pros and cons.