If you mean they are donating from their own profits, yes they can write that off. But these customer donations are not income for them and cannot be written off by the company.

https://apnews.com/article/fact-checking-000329849244

But people should research charities before giving, some are many times more effective than others.

https://www.givingwhatwecan.org/en/best-charities-to-donate-to-2024