It’s ridiculous that J qualifies as a letter.
It’s also annoying because it creates a large pocket of whitespace when it falls in the middle of a word.
It might not bother us in light styles, but when things get really bold, spacing needs to tighten up (counterspace equals letterspace) and gaps stick out like a sore thumb.
The lowercase has the same issue, a quarter turn is all you need!
Sometimes, especially in translation designs, j curves even less than that!
And other times, the descender on j doesn’t even curve at all, and it remains perfectly legible in text.
So make your J and j a team player! Monospace J and j have space to fill, so those can go nuts (like in Vulf Mono). But for the most part, I think we should save our half-pipes for the X-Games. ✌