Its safer than regular base jumping provided you don't try to strafe tree and hilltops and cliffsides. These jumpers are trying to do ever riskier stunts all for the clicks.
It's an addictive feeling, and it can trick you, because you know it's dangerous but you're always come out of it fine, great even, until you don't.
That was for motorcycles where accidents are survivable and things are much more in your control.
For low wingsuit flying those last two points are both questionable.
[Base Wingsuiting] is safer than regular base jumping provided
you don't try to strafe tree and hilltops and cliffsides
A wingsuit can give you freer air for deployment, which increases the margin for error, but wingsuit BASE seems to be aimed at proximity flying.