For example: If they have these symptoms of low self-esteem.

Put others and themselves down
Blame others and make excuses
Are defensive and arguemntative <— Happens a lot
Fell the need to impress or brag to seem important
Feel like things are out of their life and out of their control ("nothing I can do about it")

Is it likely that they will bring others in their household down? Is it??

Yes. I’ve noticed that with certain family members cough cough my estranged sister cough cough.

She always brought me down and loved to argue about nothing. She bragged about herself all the time! Every time she’d achieve something in school (which wasn’t very often), she’d brag about it. I guess she was compensating for having low-self esteem. Really sad.

Yes. It’s extremely likly that they would bring others in their household down. They are closest to them or within reach off the other people in their home so they are the easiest target. I’ve learned that misery loves company and a certain family member in my house always tries to start a conflict with me when she is feeling crappy about herself or stressed. It’s really unhealthy.