My new oven has concrete blocks inside?

EDIT: I have all the answers I need please stop suggesting things unless it is low quality jokes about pizza bricks, that is fine and may continue in perpetuity. The highly contentious consensus is that they are there in lieu of anti-tipping brackets. This was affirmed when I went downstairs and saw a bag labeled “anti tip brackets” thrown on top of the trash. Thank you for your myriad answers.

Sorry if this is a stupid question but I just had a new stove installed and where the storage drawer usually is at the bottom, there’s just … concrete blocks? Any idea what these are for or if it’s normal?

https://imgur.com/a/wkVeOjD