Does it really matter that much to have that tick on an answer that we still need to ask for this?
It depends. The original point of accepted answer is to signal that the solution works best for OP's question, as per Stack Overflow's help page:
As the asker, you have a special privilege: you may accept the answer that you believe is the best solution to your problem.
Now, of course this implies the answer is subjectively best, not objectively.
- The OP can be completely unaware that the seemingly working answer can be actually wrong, malicious, unintentionally buggy/faulty, advocating bad practices, or creating new problems on their system. A small example I've once found is an accepted answer that advocated allowing SSH login for root on an embedded system running Ubuntu.
- The OP may have left the site/forgotten the password/has no time to accept an answer. There may be an answer that addresses OP's case, maybe even objectively better, but they might not have returned to the site to even see there's a better answer available
That also implies that the solution works for OP's specific case and doesn't imply quality of the answer. Depending on the question it can be applicable elsewhere; shell scripting, basic GNU/POSIX utilities, text processing - these topics often have basic sets of practices and conceptual foundations behind them that fit a broad range of topics, so an accepted answer can work in theory for someone else's question. Questions about broken package system, compiling kernel modules, getting specific hardware working - those depend on a lot of OP-specific factors, so accepted answer really means just that it works for OP alone. The answerer also grows and changes over time, so their accepted answer posted 5 years ago may not be the best solution they could come up with today.
Accepted rate often is used as a metric of how good the answerer is or the extent of their knowledge, often this is viewed as a metric that could potentially help one find a job, even though it is not an effective metric for that. However, there's no consistent co-relation between accepted rate and answerer's knowledge or quality of answers. There are users who have decades of professional experience as developers or sysadmins, and yet their reputation points are fairly low, plus accepted rate may be low.
IMHO accepted tick mark should matter only to OP themselves. Canned comments are OK, they give OP incentive to think about the best solution they've received thus far (which may not be the best solution 2-3 years down the road). So long as "Please accept an answer" doesn't become unnecessary noise and unnecessary pressure for OP, that's all fine and dandy.
And the same Stack Overflow post has expressed this the best:
Accepting an answer is not mandatory; do not feel compelled to accept the first answer you receive. Wait until you receive an answer that answers your question well.
Even though back in the day I would rush to ask OPs to accept my answers, by now I sort of figured out it doesn't particularly matter, and objectively means very little. Others can go ahead and try to win OP's favoritism, but I'll just focus on quality of my own answers here, and if OP's unavailable or cannot figure out my own answer might be better - well, that's their freedom and I'll respect that.