I was amazed they gave a pen, but that's because I've never seen them given for similar challenges; defenders blocking shots are generally given immunity, like goalkeepers are always protected by the ref.
But the defender:
- could easily blocked the shot without leading with his boot,
- went in studs up, which has been a red flag for years now,
- went in very high.
Although I think we were fortunate, this wasn't a situation where I was embarassed that my team got a "wrong" decision go in their favour.
(And I'm old enough to have seen plenty of bad decisions influence England defeats!!!)