Qwt is currently built with Qt5 - should I mark the package as out-of-date?

Hi all, Sorry if this is a naive question, but qwt <https://archlinux.org/packages/extra/x86_64/qwt/> is currently being built with Qt5, which is nearing end-of-life <https://endoflife.date/qt>, while Qt6 has been out for a while. I'd like for qwt to be built with Qt6, but I'm not sure if this means the package is out-of-date strictly speaking, so I figured I'd ask here before marking the package as such. What's the right way to deal with this? Best, - Peyton