I was on the fence about this, but I'm not sure that lowering the close votes will make much of a difference.
Writing is an unhealthy site in a number of ways. With regards to closing, it's not so bad, especially not compared to some of the sites that fully embraced 3 vote closing.
The reasons given to offer 3 vote closing in the linked question don't seem applicable here: "When reviews don't happen" (they do, in time), "When moderators do most of the closing/reopening" (they don't). And there's only been a maximum of 5 posts with pending close votes that I've seen at once. That's nothing. (ELU had 100+ before it switched to 3 vote closing.)
Sure, posts will get closed faster, but will that prevent the early answers from being posted? Unlikely. The answers seem to be faster than the first three close votes.
For some more data, I wrote a query (two, really) to determine how long things take to close in the review queues. I looked at every post from this year that entered the review queue and got closed:
(The first number is the creation date of the post. The second is the number of hours since the most recent close vote review item was created until the question was closed. This query contains posts where a mod participated in closing, but not when they were the only ones; something else must have triggered the review.)
I ran the same query on ELU and saw a much different picture. Most questions there (before the change to 3 votes) took the better part of a week to close (remember, the queue was always at 100+ items).
Admittedly, this doesn't show the reviews that got lost because nobody was voting, such as Can I write a protagonist that speaks broken English without annoying the reader?. It remained open, even though 3 people voted to close it vs 2 who said to leave it open. It was only closed months later due to someone completely different and the OP.
Note: The above looks only at public data (and is admittedly flawed). With my diamond comes increased insight into the inner workings of the site, so I can get a better idea of what's really happening with close votes. I'll have to see if that changes my perspective on this.