What doesn't make sense about it? They don't have the knowledge to use an offline image editor so I'd like to offer them the ability to make very simple changes to an image. Photopea is beyond what they need and would no doubt be equally confusing for them.
What doesn't make sense is your use of the term "offline editor" - it's entirely nonsensical in this context. If they can't use an offline editor, they won't be any better with an online editor. It's like saying you need a 4 door car because you can't drive a 2 door car - it's the same thing with more seats. Photo editing is photo editing regardless of where the software is hosted.
What on earth are you talking about? How is an offline editor like Photoshop or GIMP in any way comparable to a simple app like the one i described in my post, that simply allows a user to add text to an image?