"Page 604: Under Companion Items, replace the third sentence with “Normally these are the only items a companion can use. Other items may qualify, at the GM’s discretion, but an animal can never Activate an Item.” This makes the rules clearer than before, and allows the GM to opt into adding more items." From pathfinder Errata
"Familiars are mystically bonded creatures tied to your magic. Most familiars were originally animals, though the ritual of becoming a familiar makes them something more." CRB pg217 Familiars are not an animal thus the rule of an animal never using does not apply to them.
With Familiar Master anyone can get an improved familiar which can be a creature that never was an animal and thus can activate items. By the time someone can get this it should not be a problem about a familiar being able to use a few magic items by the time it is practical.
As to the video of one of the game designers saying familiars cannot use items, I think he was in error of the rules. That is not how they are written. And they have not yet sent me a replacement Core Rule Book with the corrections if they have changed how they work. It is not practical to try and track down every video or artical every team member has made or taken part in to deturmine the rules. Also this is a pen and paper game, that means out of the box thinking is possible which is the main reason for playing pen and paper instead of another video game.
As to the problem of familiars being able to scout, use the message cantrip to give them commands.