You don't need this many tools, especially really early. It also depends on the particulars of your business. E.g. if you are B2B SaaS, then you need a ton of stuff automatically to get SOC2 and generally appease the security requirements of your customers.

That said, anything that's set-and-forget is great to start with. Anything that requires it's own care and feeding can wait unless it's really critical. I think we have a project each quarter to optimize our datadog costs and renegotiate our contract.

Also if you make microservices, you are going to need a ton of tools.