Not sure what that stats is on about. Doesn't say much about The Athletic if they get such a basic and easily checked stat very wrong.
Goals by subs in the league last season.
Van De Beek vs Crystal Palace. 2-0 down at the time of sub, lost 3-1.
Cavani vs Everton. 2-1 up at time of sub, won 3-1
Cavani (2) vs Southampton. 2-0 down at time of sub, won 3-2
Rashford vs West Ham. 1-0 down at time of sub, won 3-1
Martial (2) vs Southampton. 4-0 up at time of sub, won 9-0
James vs Southampton. 4-0 up at time of sub, won 9-0
Greenwood vs Spurs. 1-1 at time of sub, won 3-1
Cavani vs Burnley. 0-0 at time of sub, won 3-1
Cavani vs Aston Villa. 2-1 up at time of sub, won 3-1
So, that's 12 goals by subs, not 8.
And The Athletic expect people to pay for their services?