Alternatively, what you can do is scroll up to the first post. Copy the name of OP, hit CTRL+F followed by CTRL+V to paste the OPs username into the search field. .
like, dude, thats a LOT of work when im in a read only kind of mood.. especially in a multi page thread where i have to click to back to the 1st post to do that.
im lazy af and im sure others here are too.
It's might not be necessary for everyone but such can be given attention for who cares.