Compassion is not weakness, even though we culturally associate it with weakness.
The reason is that so much of compassion is inauthentic, and comes from a place of compulsion.
Many people are not compassionate because they choose to be compassionate, but instead they feel they must be compassionate.
Who do they this debt to? If you nailed them down and asked them to explain who they were preforming for they’d shrug. The collective default is to be compassionate, but many have never consciously chosen to be compassionate, and calculated what they are giving up .
Now there are some who will ague this is not the true spirit of compassion. That compassion should be selfless and thoughtless, but that in and of itself seems worthless.
Sacrifice is not worth anything if it is compulsive.
True compassion is the strength to think about a situation, and see the benefit in being unkind to others, and there is a benefit if you are willing to pay the cost, noting that cost, and then deciding to be compassionate anyhow.
When you choose to be compassionate not because you feel you must, but because you feel you want to, you are no longer a slave to culture, and instead are kind from a position of strength. Thus kindness stops being compulsory weakness, but instead becomes conscious strength.