This is so beautifully offensive.
Offensive and informative. The best kind of offensive!
Opened the network tab in Inspector, and got 1.3-1.5 MB. (Pretty sure the cache did not trigger; let me know if you get different).
If that number is accurate, that was way more optimized than I thought it would be, given that the whole thing is just a string of images!
I think your bar for optimization is pretty low if you find 1.5MB to be 'light' for a static page with some uncomplicated PNGs on it.
They could have all been SVGs!