Scare tactics?
Depends on your personal experience. I witnessed (post event) a Gold Wing rider (open face helmet) hit in the face by a big piece of Tire debris on freeway at 75 mph. Knocked him clean off his bike, he was run over by following traffic. Dead. Sad. Eye witness confirmed. Would a full face saved him? Dunno? Maybe.

i've been hit by road crap several times over many decades (300K miles) of riding. Usually in the leg, chest but sometimes in the head. Like the huge (6 ft. wing span) Owl that hit me at night on the Interstate at 75 mph. Full face helmet saved me that time.

I like my Shoei flip up helmet. The Flip Up design is good in town and slow riding and hot weather and riding off road. Good for communication when stopped, nice not having to remove helmet. (like open face)

Once underway, just lower/lock the chin bar and you've got a full face with a quality shield protecting you. I like it! I've had rocks and other serious debris hit my shield at high speeds. Glad I had the shield there! How about you?

Lots of bad things can happen in a crash, this learned during 8 years racing AMA Enduro series. Siding and rolling don't always get it (but that IS good advice!)

I wish I had a picture of the woman I met who hit the road face first wearing Harley style "Beanie" Nazi type helmet. After 6 plastic surgeries over 8 years she still had NO CHIN and one side of her face ... was sort of ... gone. Hard to look at her. A full face helmet would have totally saved her.

All that said, it's always a personal choice. Risk management is up to individual.
Motorcycle riding is dangerous no matter what gear we wear.
Stay safe out there.

PS: If I wanted to scare you I'd tell you details about the dead riders I've come across at accidents and what that was like!