you know what Opera mini that is a mobile browser still uses the Presto rendering engine. and it is the most popular browser in the mobiles. and there is also a Opera Browser but Opera mini is more popular. and why is that because you know why...
if they can manage to develop two types of browser in mobile apps market than they can also manage to develop two kind of browser for PC.

i am really worried about if Mozilla Firefox will drop gecko and start using the chromium rendering engine in the coming future. and they will also say that "chromium rendering engine is better" that's why we dropped gecko.

well i know that opera has become a chromium based browser. every new browser is going to chromium these days. i liked Opera browser because it was different. it was not like Chrome not like Firefox and not like Internet Explorer. it was customizable and with lots of features like Opera note, option to just show cached images or dont show any images, use your own customizable css etc.
and now it all looks the same only interface is changed. i mean whats the difference. everything behind the interface is chromium based.
if i have to used chromium than i will used Google Chrome. not Opera, not Vivaldi, not Yandex not anyone.

i just want to say that continue updating the Opera Presto version. than you will have two types of browser. than everyone will be happy.