Ecosystems need to be damaged; killed even. Use what you want, on whatever system you want, for whatever reason you want.
It’s YOUR phone, not Apples.
There are pros and cons to both approaches.
The benefit of Apple's ecosystem to me as a user is that Apple makes all their devices play well with each other. I can answer calls on my iPad and my Mac, I can unlock both my Macbook and my iphone with my Apple Watch, I can easily set up my Apple TV with my iPhone, and Apple is able to ship all these features bundled on every apple device precise because they control the hardware and software.
It also means that if I see another person using an iPhone, I know with 100% certainty that they have access to airdrop, FaceTime, namedrop, even SharePlay.
The downside is that these features tend to be available on Apple devices, which makes sense. They cost money to design and implement, it's how Apple differentiates their products from the competition, and it's why Apple is even willing to invest in designing them in the first place (because there's money to be made from charging a premium).
On the flip side, you have more open devices like android phones and windows computers, but because they are all manufactured by different vendors and the software is maintained by different companies, there really isn't much incentive for them to come together and improve on the inter-operability of their products. Like sure, there's an app which lets you simulate Airdrop on your non-Apple devices, but it's also an app that you need to download and install on all your devices. And if you want to be able to use it with your friends and colleagues at work, you will then need to convince them to upload said app (good luck getting it onto work laptops which often prohibit the installation of third party software). This is also assuming that said app is even secure and reputable to begin with (we are really going by Google's word that there is nothing wrong with their implementation).
Anything you want, you can theoretically do with the right software, but it's also more work, and this just means that way fewer people will actually bother compared to if the feature simply came preinstalled. So it means that a small group of more tech-savvy users may be able to wring more functionality out of their computing devices, but a far larger group simply won't bother.
If you want the benefits of open ecosystems, then it also means that other people have to deal with the downsides of an open ecosystem. You may find the limitations of a more closed ecosystem too restrictive, but for many other people, they appreciate the security and ease of use and they don't really miss what they don't need (eg: ability to sideload apps). But Apple doesn't just cater to you and you alone, and I don't feel like one approach is any better or worse than the other.