As many have said… it depends.
The recommended toe in, or not, is a starting point. My manufacturer recommends to start by crossing the beams behind your head by about 18”. Turns out in my room with my setup, no toe in results in the widest and deepest soundstage without loosing the central images. So imaging is homogeneous across the soundstage. Hence a piano recorded in stereo with the intent of capturing the sounds from left to right will be be equal volume across the soundstage, with no warping of the image.
You must make adjustments in very small increments to find the exact best spot. An 1/8th inch can make a big difference with some speakers.
If you are fairly new to carefull tuning, then it is easiest to way to start is to just listen to your speakers for a few weeks until you know the sound. Then make a big change in toe in. Then listen, for as long as it takes for it to be obvious that is much better or worse. That could be a minute or a couple weeks. Then go to the best sound and move half way towards what was last tried. Anyway take your time and make successively smaller moves until perfect.
Folks with lots of experience can do it in minutes… but the first time can take months… but there is no hurry. Getting it perfect is a huge win.