I have a feeling you do not understand how PPE works. Masks actually do provide some assistance to reducing the spread of disease. Otherwise, medical professionals wouldn't use them in hospitals. Continuing on that point, homemade masks have a varying range of effectiveness. Some are more effective than others based on material, layers, etc. The purpose of the mask is not to block droplets from getting in, but to block droplets from exiting the mask. That is why you still need to social distance and keep 6 feet apart, even while wearing a mask. It is not false hope simply because you watch one video on the internet that does a homemade science fair project showing masks as ineffective.
As for the gloves, personally, I believe they are unnecessary provided you wash your hands every time before you eat/drink or touch your face. However, they do help protect your hands, but they need to be changed often to be most effective. The incorrect use of gloves by guests is not the park's responsibility.
Which leads to my final point, all these measures are great, but what if people refuse to participate in these measures. Say for example, you place hand sanitizer at the entrance of every ride, that doesn't necessarily mean people will use it. Some may not even notice it, some may not care, and others are opposed to using it.