if we order an evacuation, it is absolutely the last resort
Hmmmm, looking at the pics, I don´t see any smoke or the like.
Sometimes I feel I´d be better to wait and check. The WX looks fine to me and I think the tower should have been able to see the airplane and thus give valuable info to the crew.
I´m sure the crew followed SOPs, still...there is 3 minor injuries now and IF N.4 would have spilled parts, fuel and fire, then an evac to the right side seems wrong to me and could have resulted in more injury.
Q for 146 drivers: can one see the engines from the FD ?