This indeed is true and I truly wish they made Vivaldi open source. However, free and open software is an ideal. Like any ideal, it can be used as a front and abused inna way that defeats its purpose.

In its original form, free and open is noble. But since then, corporations have figured out how to monetise it. So, IMHO, we need to be very careful about anything free and open coming from corporations because their core objectives are very much orthogonal to the core objectives of the original free and open software movement. Those execs aren't the hackers who built the gnu/Linux tools in the early days.