The "Quote" with the back arrow is the reply button and the other is for multiple quotes when you want to quote or reply to more than one person in a single post.
An interesting point, Travlr. as the cut and paste I made, above, indicates, there is no way for me to respond without hitting one of the Quote buttons.
It would seem hitting the multiple "reply" button would, at least, point to the post we are on, pages back, or, at worst, point to at least two posts we tangled with recently, rather than ignoring everything. It's an "IF THEN" programming thing someone had to work hard to get in place. . . .
From MY years in the computer world (starting back around 71), both professionally (repairs, for the feds), and with regard to using them as private tools, it's hard to dismiss corner cutting programming that devalues itself by making the program less efficient, or trustworthy.
For example, the Bill-Gates-Of-Hell crowds constant updates to their bloatware to fix things that were better than the fix. Things like: (1) having to click several buttons to do what, before, required only one; (2) having to jump through several hoops to open managers to allow you to organize via clicks and drags between folders; (3) corrupted drivers that blow through the screen you are working out of taking your right back to the home screen;
SIDE NOTE: I've re-loaded the drivers and even Windows.