The lack of ram is not as big of an issue as everyone seems to think. iOS is highly optimized so it can get away with using less ram. The real issue is probably the website. I can have 6 tabs open at the same time and switch between them without any reloads but it depends on the site. If a site is memory hungry then I will experience reloading. This is the same situation on my Nexus phone which has 2gb of RAM.
So yes, Apple should have put more ram in the iPhone 6 but you can't blame everything on the ram. There are phones with 3gb of ram (Galaxy Note 4) that have the same issues as the iPhone 6.