"Without the "oww, look here" oval, highlighting the alleged area of tampering, the picture looks normal to me, given the nature of the lighting and image format "
OK, GarageYears.
Funny. Now the meta-conspirators find culpable the mere act of observing and making the observation more useful to others. Regrets!
Of course in my place you would only, say, put the original photo here and politely ask, "Hey, do you see something strange in this picture, please?".
That would sound very normal indeed.
For godīs sake...
ps: btw, if you are someone skeptical of the importance of careful observation, I have enlightening news for you:
10 Fascinating Mysteries Solved by Photos