What you said isn't incorrect, but point is that we don't talk about game changing amounts where it creates imbalance here, but rather minimal amount, this is the difference. Not having access to titles granted from Badges of the Trial is creating large imbalance, whereas this isn't even noticeable. It is normal that people want to get everything they possibly can for their characters, however simply spending currencies to obtain it in fastest way possible is not the way to handle such, and will simply only create further issues down the line if/when it would be required to remove it.
I just want to mention that ppl can even skip accidentally the useful titles with skills on it. In such a case they would be happy to get the scroll easier
Reset scroll is already available for diamonds in item shop, as well as drastically cheaper for Atlas Tokens for this reason. It is not required to buy the expansion scroll to unlock most titles in this case. You can reset all progress and start from the beginning if preferred rather than doing the extended questline.