In your case it sounds like you should not try to learn using blender with the industry compatible keymap. From what you’ve written it sounds that you are familiar with blenders default keymap already.
If you already got into that and feel fine with it then there is no need to switch and no then there also is no real benefit in that. The opposite might be the case. Blenders default keymap gets more attention in being updated than the Industry compatible keymap currently gets.
In short the industry compatible keymap is basically just another layout. I read often that it would be there to learn blender. That is not the right way to look at it and also is no good advice.
Using the Industry compatible keymap is fitting better if you already learned other 3dtools and would like to see blender resemble parts of well known control schemes to make your life easier. So if you have used other 3d tools before some shortcuts may be burnt into brain, like selecting elements with left mouse button, like w,e,r for move,rot,scale or have direct shortcuts for vertex,edge,face edit and object mode . You migh prefer that concept over blenders edit mode, object mode TAB switch. Luckily Blender is very customizable under the hood. Overall there are quite some similar input concepts that you will find across well known DCCs aswell as many of the small tools who resemble these “standards” too and the IC keymap is blenders option to behave like that too. To me, that is what the IC Keymap is about.
But if you learn using blender with the IC Keymap you will stick to it because you will very likely prefer the similarities tomorrow as much and you learned using blender that way. So it makes no sense to learn a keymap for a 3dtool and once you got good at it, throw it away and use a completely other one.
William Reynish put a lot of effort into designing these alternative keymaps and I think he did a great job with it. Its giving the user the choice, that is great. But as an official keymap it needs regularly maintenance. I read somehting that he got another job and with it, it seems the IC keymap lost its main developer. The Industry compatible keymap now needs a new update concept to stay up to date. Some important shortcuts definetly did not find their way into the IC keymap recently.
Most people tend to alternate the keymap after some time with blender and at that point its rather important how good keymaps can be adapted. Generally that is an area where I think blender still needs to evolve, to make customization easier, offer support with solve input conflicts and make the whole keymap and its editing more streamlined and lightweight. Parts of these needs got adressed within the Industry compatible keymap. It’s definitely smaller, and so its easier to customize, some other ui developments also help reducing that massive amount of shortcuts. Blender has thrown away quite some old input concepts recently, perhaps a more modular and easier keyboard shortcut system will show up. Until then I hope Blender finds a way to keep both keymaps equally well up to date.