There's a genre of opinion that sounds like "I don't want politics in my videogames/workplace/church/facebook group", which stems from an idea that politics is exclusively a thing that politicians do in government, coupled with a (mistaken) sense that 'being political' is a bad attribute.

In fact, 'being political' is non-normative - per wikipedia:

Politics is the set of activities that are associated with making decisions in groups, or other forms of power relations between individuals, such as the distribution of resources or status.

So, the first answer to your question is a pedantic one: "joining together for a common purpose" is by definition a political act.

The second, more nuanced argument, is that your even if it's not obvious, these mission statements are political:

- "Accelerate the advent of sustainable transport" - says that 1. sustainable transport is good; 2. sustainable transport isn't coming fast enough; 3. it's appropriate for a private company to influence the transport market

- "Build the best CPU" - 1. CPUs are a good thing to spend energy and finite resources on; 2. something about the validity of calling a cpu 'best'

and so on. I agree that having a clear mission which your employees are aligned to is crucial for morale and effectiveness; but the way that mission is chosen, who influences it, the way that it displays beliefs about what is desirable; and how it evolves over time all are all political.