Republicans as a party, campaign on things like ending social safety nets.

So even if you can cherry pick a single republican that didn’t try to stop something like free school lunches, it doesn’t redeem the whole party because they didn’t all work together towards it.

Democrats as a party, campaign to improve safety nets so even if you can cherry pick an example where individual democrats didn’t then that doesn’t apply to the group because it wasn’t the party working together towards it.

I hope that helps you understand.