You guys keep not installing what you don't want - that's fine and your choice - but don't remove mine for no reason.
When app developers have the ability to bypass the walled garden, they have many incentives to do so ranging from financial to wishing to circumvent scrutiny. This will include an increasing amount of popular and useful apps, decreasing the options available to those who want to stay in the walled garden. For less technical users they will blindly follow instructions to leave the walled garden.
You are removing the choice of users who want a walled garden by supporting legislation forcing these ecosystems open.