So from your point of view, this who do not use HTML5/CSS/IS are not "Higly Professional"??????
No, they are better than us & more professional, but they need a long time to develop.
I mean from my view i prefer my approach for these things:
1- Fast GUI designing in a short time
2- Product will be more professional because availability alot of HTML5/CSS3/JS themes, tricks
3- HTML5/CSS3/JS is a cross platform interface
4- Native GUI is great, but need a more time to finish
5- Easy conversions between b4a,b4i and b4j
Someone can ask me; Use cordova like programming!
My answer no, B4X has the upper hand on Cordova, because:
1- B4X has vb like programming lang and its code is clean separated from UI
2- Creating,Editing and Publishing B4X is far easy than Cordova
3- Cordova code is JS & is exposed not compiled