Browsing websites with a companion app always prompts you to view in the app or install the app, and the presentation is always biased toward doing so instead of declining. I wish there was an option to indicate that you don't want to be prompted in this fashion in the future - either all around, or to have it remember specific apps that you don't want to install.
It really is a persistent annoyance. The Reddit website in full desktop mode has also recently been pestering users about logging in, and it does so every time you navigate to the site if you aren't already logged in to an existing account.
It is really quite annoying, and has actively caused me to use the site less. I'm much less likely to use a timesink or unfocused browsing activity if I'm being pestered while doing so. I imagine that this type of activity is a significant portion of the whole for such websites, so it really seems disingenuous, unless their long-term plan is to pull a Facebook and focus on revenue through selling user data to third parties (which I imagine is most likely the case).
The other place I noticed it recently was Reddit's mobile website, which asks me to download the app TWICE every time I reopen it on my phone. The first prompt is a bottom banner taking up about 40% of the screen on my phone with the small link to the mobile site situated uncomfortably close to the much larger button which takes you to the app store. The second is a popup from clicking on a link, which takes up about 60% of the screen and is centered. It's workable, but it's almost as annoying, persistent, and anti-user as Facebook messenger on mobile web browsers.
It's infuriating seeing some of your favorite products try to pull this on you. I wish I could tell the developers to stop being assholes to their faces.