iOS, with its single hardware manufacturer, has been 64-bit only since 2017. Android has a million moving parts split across a bunch of different companies, so getting to 64-bit only is going to be a long road. Getting there is worth the effort, though, with a promise of increased performance and additional security features.
We really need for the phone makers to stop acting like RAM (and storage for that matter) is worth more than gold. The jumps in prices in various storage versions of phones wreaks of profit markups. Like how stores will take stuff like HDMI cables that cost like $2 to make or buy from the cable makers. But then turn around and put “fancy” sounding buzz words on the box and charge $50 for them. I can’t believe how long it has taken for even mid and high-end phones to get 4GB or more of memory. But I am guessing at a certain point they want to make sure the devices start to “feel” super slow to keep people upgrading ever two years at least.