Looks like ~4 MB, I think that's a fair size to not throw up warnings about (unless I'm missing something in the Network view of dev tools w/o cache). That said I wonder what people consider the "Click to enlarge (may take a while to load)" courtesy size to be in 2024.
50 MB might be fine for desktops on effectively unlimited & high speed connections, but consider the case of a mobile user with a few GB of data per month. Might be unacceptable for them. Not sure how common that case is in the US, but certainly possible outside the US.