Hi Payaminotom:
Obviously, it's not my forum, and anyone can post any question and photo they like and if people are williing to answer, then that's fine.
Please note: I didn't simply make a gratuitous comment about your rationality.
I took the trouble to modify your photo to bring out more information, as I sometimes do, and as I regularly encourage posters to do for themselves before posting. Despite your (perfectly reasonable) comment that "not everyone has the luxury to be able to afford a flashy camera," there was still information to be gained from this adjustment (my photo in post #2). I also gave an ID, saying that for me it was a Tufted Duck, which appears to be the agreed ID judging from Steve Lister's post #7 and the likes it got. Admittedly, your post was only a couple of hours old when I replied, but it was already slipping behind other later posts which had been answered and was dropping towards page two (my post was your first answer), so I answered partly to make sure that it would have an answer since no-one else had done so. If your original ID of Scaup had been correct in my opinion, then I probably wouldn't have posted at all.
So: before I made my genuine enquiry about why you posted this, I treated your post with respect by giving it my best attention and the fullest answer I could.
But I was genuinely interested in why you took this one particular photo from a year ago and asked for an ID. You specifically said that both possibilities are not new to you; and they are not rare. In my time, I have posted equally low-quality photos, but when I did it was always the case that the answer might be a lifer or location lifer for me (especially after trips to Africa).
If you kept this photo from a year ago, then I surmise you have possibly many other equally unclear photos from that time, and I wondered why you chose this one.
So I thought maybe you are one of those people who takes complete lists on a daily basis - I don't at all, and therefore some people consider me not a 'real birder' for this reason - but I only started birding after fifty, and it grew from just doing it for the personal enjoyment of nature on daily walks to something more time-consuming, though not obsessive. Or do you have some other reason?
My post was just a query; poorly expressed perhaps, but just that.
On Saturday, when I posted, my wife and I were on day six of isolation at home, having finally got covid-19 after three successful avoidance years. So although I probably replied because your question seemed to be on the verge of isolation itself, my questions about your reasoning may have arisen out of boredom, and I would not have asked them if my week had been more fun.
(Thank you for asking: Covid (XBB variant here in Japan) is not fun, but not as bad as feared (four vaccinations?). My wife, having made preparations, managed to do her quite difficult and important job via Skype from home. She's back at work today. I still have a slight headache which won't go away, but temperatures having got up to 39ºc are now back in the normal range.)