I think we've seen it too many times on this forum where people will come in with completely innocuous photos, proclaiming them to be 100% proof of UFOs and aliens. And no matter how much others tell them it just looks like a plane, or a bird, etc, they won't accept anything other than their first assumption.
It's a two way problem. There's frustration on both sides of the argument, from people who really believe and refuse to see any other outcome, and those who truly don't believe, and can't get past that.
For my own part, I used to believe in UFOs, but having watched the community over the years, it's really put me off. So many fakes, so many people taking videos of planes and helicopters, then putting them on YouTube for the fame and glory, so many disappointments.
Your pictures in particular, did look like a plane. If we'd been using them with the premise that they're unidentified, which is what the U in UFO stands for, then we'd have to reason that actually they're just an airplane. It might be a little overzealous for people to TELL you what they are, instead of suggest, but like I point out, too many times people are uploading things just like that and being totally dishonest, daring the world not to believe in UFOs now, after this stunning proof. So the frustration comes out.
It's so bloody difficult now to know who is genuine and serious with their UFO evidence, and who is just out to get a few followers on YouTube, or to enjoy their five minutes of fame in the internet limelight in general.