with uBlock Origin you can just filter the feed

www.linkedin.com##[aria-label^=“Main Feed”]

Does this violate the EU Digital Markets Act?

7. The gatekeeper shall not require end users to use, or business users to use, to offer, or to interoperate with, an identification service, a web browser engine or a payment service, or technical services that support the provision of payment services, such as payment systems for in-app purchases, of that gatekeeper in the context of services provided by the business users using that gatekeeper’s core platform services.

source: https://eur-lex.europa.eu/eli/reg/2022/1925/oj/eng

By the way, you can contact the digital markets act team here and raise the issue! https://digital-markets-act.ec.europa.eu/contact-dma-team_en