I prefer working 3 days a week AND retire early.
That's what I did for a while. After 16 years of working full-time, I switched to working part-itme. 20 hours per week. That began as a mostly telecommute deal where I'd report to the office one day a week (about 6.5 hours) and work from home for 13.5 hours spread out over the rest of the week. After 27 months of that, the company ended its open-ended telecommuting so I had to report to the office to fulfill my 20 hours which I did by coming in 3 days a week.
After 3.5 years of that, the 3-day week was too much, mainly because of the commute I so despised being forced back into after the telecommuting ended. So I switched to 2 days a week, or 12 hours per week total.
My ER plan was taking shape in the (last) 17 months I worked 12 hours per week. One all the pieces fell into place, I retired.
Now here is where I agree with the author of the linked article, at least in part:
Working part-time for those ~7 years enabled me to stick around longer with the company compared to if I had to work full-time which had already burnt me out after the first 16 years. I was miserable after 16 years, especially with the commute which was worsened when my company relocated and made a barely tolerable commute into one I could not tolerate on a full-time basis. And sticking around longer enabled me to retain one key benefit - the exploding value of my company stock.
Had I worked full-time but for less than the 7 years I worked part-time, the extra money I made in wages, bonuses, company match dollars, and company stock allocations would have been at least partly offset by the lower company stock price my extra shares would have been worth once I left the company before those 7 years took place. For example, the company stock price doubled in my last 3 years of working, even part-time. There is no way I would have twice the number of shares of company stock had I kept working full-time. I never ran all the numbers comparing these two options but a rough guess is I would have about broken even on the money side If I left 3 years earlier but worked full-time for 4 more years - 4 more MISERABLE years.
So, spreading out what dwindling willingness I had to work over 7 part-tiome years instead of 3 or 4 full-time years turned out to be a good move.