No it sends the message that they can do it. And that is massive all on its own.
It's designed to bring them to the table without starving the workers. Indefinite strikes would obviously be more effective but then you're forgetting about the people who do need the jobs.
How many people can actually survive not working for months? Principles are great but so is paying rent.
If nothing changes they can just do it again and at a time that hurts them most. Like election week.
The Times Tech Guild’s decision to strike during the election is not coincidental. The strike comes after a two-and-a-half-year back-and-forth between the union and The New York Times. This September, the union gave Times management an ultimatum: if demands were not met before the Sunday leading up to election day, Times Tech Guild members would go on strike, leaving the news organization vulnerable.
That's all well established. They have been negotiating for a long time.