Ionic serve --lab not showing lab view or mobile view like android ios

i am using "

ionic serve --lab

" but it open in browser mode but not ionic lab

ionic info output

--lab option was deprecated and then removed in Ionic CLI 7.0.0

why ? it is like google deprecate its google chrome browser and its searchbar
because of google assistant :zipper_mouth_face:

then any other option for doing that, because in browser window (ctrl+shift+m) it is not same as lab view ? @ julio-ionic

Lab was deprecated as its original purpose was fulfilled in browser devtools. Both chrome and safari provide a rich experience for emulating ios and android devices and letting developers see what their app will look like when deployed to a real device