that is a great function. Sometimes you have to open many drawings and waste a lot of time just to change an small letter for all. Please, if you don't have anything yet we really hope it will come soon. this comentary was made since 2005. I think it is time to solve this issue.
I also notice the "Find & Replace" text function is missing from Inventor.
Also did a search and find this almost 10 year old thread.
Surely it is a useful function but it is absent from the 1st release.
Someone has submitted the request in "Inventor Ideas" but seems just no update for it.
https://forums.autodesk.com/t5/inventor-ideas/find-and-replace-text-in-drawing/idi-p/7475159
IMO it is a simple function that had been existed in AutoCAD decades.
It should be provided to users with Inventor.
Can we expect it will be available in the next update of 2022/2023/2024 or next release of Inventor?