That’s an uneducated take. The amount of goods and services required by a population as a whole isn’t affected by boycotts. What one company loses others will replace since they have a profit motive to do so. This requires them to hire additional labour which can easily come from what labour boycotted companies lay off.
That’s assuming a boycott has such a large impact as to require a workforce adjustment which is basically a fantasy scenario in most cases.
Stop convincing people into more apathy than is already plaguing us.
We’re not trying to boycott EVERY corporations. We’re voting with our wallets for the lesser evil the same way we vote at the ballots for the lesser evil.