The healthiest is to enable the option to only charge to 80% (or near there, depending on the phone you have).
Otherwise slower charging is better, if the wireless charging doesn’t make the phone hotter than say 30C or so I wouldn’t worry about using it. 45C is the limit for charging Li-ion safely, but it’s better to be cooler.
If you want that style of UI use Zen browser, it’s based on Firefox and doesn’t require an account to use it.
Arc is just another crappy browser based on Chrome. The account requirement was and is a huge red flag.