Being based on the Merkeva tank the Namer is very heavy at 60 tonnes. In comparison the Bradley IFV clocks in at almost 28 tonnes.
The Israelis like putting their infantry behind THICK armor... and all of their scrimmages are ‘home games’ where the armor rolls into battle directly frome their basing areas. If Czech doctrine is going to be similar to Israel’s... why not?
The extra weight probably means greater protection for the crew and troops which would be a good thing in urban areas. I’ve seen some interesting proposals where one takes the turret off a tank and replaces it with a remote weapon station with the main weapon being a 30mm or 40mm cannon.. This gives the crew very good protection but the design can’t carry troops.