The problem with steel toe boots is that they offer no orthopedic support.
I have tried a few different brands of boots Keen, Timberland, and Caterpillar.
I have a flat foot (no arch) and steel toe boots are extremely painful.
Until I found proper insoles
https://xstanceinsoles.com/ I bought one pair 3 years ago and they are still good today.
And my wife bought a pair for her nursing shoes as well
Wear my steel toe boots 10-13 hours a day and these insoles are the best