[scarface74]

If the premise behind right go repair is partially to increase the longevity of your device and prevent ewaste, water resistance is part of that.

[mtlmtlmtlmtl]

Water resistance != waterproofing.

There's no need for glue to ensure water resistance. With a repairable(easily opened, non-soldered parts) phone it would be much easier to repair water damage anyway if you accidentally dropped it into water or something. Most people have no need for keeping their device on them while swimming.