@iska@mstdn.starnix.network
No, it doesn't. Are you sure you are not confusing all allocated ram (vsz) and actually used ram (rss)? When it comes to actually used ram it's very lightweight, well under 100Mb, lighter that rxvt-unicode in most cases.
If you're THAT much into preserving RAM, you can disable scrollback buffer and I think it'll be close to st.
@iska@mk.starnix.network