One fuzzy photo is not going to impact the AI ability to identify a species, which as I write has over 21,000 observations. If anything having a range of quality (as well as features etc) helps as it more accurately reflects what is submitted.
In terms of if you should ID it, I personally cant tell if that is clover or someone spilled their spinach salad on the ground. It still comes back to this question to me, if shown the photo, told when and where it was taken, and given no other information, what would your ID be?
You should feel no sense of obligation to identify something for someone doing an assignment etc.