OpenSource - Signal (IM) Advantages over WhatsApp

From a couple of days, I could see a lot of messages on WhatsApp about WhatsApp security/privacy issues. I find all these strange because, is it that WhatsApp was not accessing your location, gallery, contacts list before? Is it possible for any app to give you all features without getting the permission of all these? Whats have changed anything in terms of security recently , any new security issues found with whats app?  Nothing has changed, messages are circulated in WhatsApp to move out of WhatsApp, enough proof that they don't read your messages. I can also see that people are bothered about data sharing their private data . what data they will share if at all, it will be your travel patterns to suggest you best places, it will be your purchase and spending pattern so that they can suggest you certain brands, not more than this. I don't think it's harmful. as anyway Google does it today it uses your location, suggests you so many things .. many do this, this  is how freeware business model runs.  Suddenly I see a lot of people are getting bothered about WhatsApp Security and Privacy Policy. I haven't seen any potential security incidents in the last couple of years. It's quite stable. Now the question is,  is it not necessary to move to Signal? I see the Big Advantage to move to Signal as Signal being "Open Source " This is the Strongest reason for me to move to Signal, not any security/Privacy -related reason. Let me explain what it means and how it's going to be a paradigm shift, Why  Only Signal why not Telegram, hike or IMO, etc. 

Open Source: It's community-driven software, it's not proprietary code not owned by any commercial organization, and it runs on donations. It means If all WhatsApp users move to Signal which is open source, software companies have access to the code base of Signal, it means that we can start integrating messaging of Signal with all other local apps, their will strong integration between social media and other business Apps, 

We can integrate Cars with Signal, Fridge, TV washing machine, Create Service bots. One can see the full paradigm shift of Social media and Business App integration. 

It's also possible to have personal Signal Servers As well as General Signal Server, We can Add features we want to it and make it available for our Group.

Let me explain what it means -- We can change Signal App to Add a feature and   distribute it, a feature like Auto delete some messages or reminders of something. 

If the signal is integrated with my CAR I can send a message to the car-like "Turn on AC I am coming" and Car can send back , "Low on Air " , "Low on Fuel Cant go till you Destination " to you Signal IM 

So Car companies will do their customization, educational technology companies will do their   Like  

Anthropic Software Pvt Ltd  Works in Education Technology Automates full Educational operations like Examination, Time Table, Leaves, Scheduled Classes. If we integrate it to Signal to our TrueGuide Teacher App, when the teacher creates an examination, a message to signal can be sent saying you have an exam on this date, when Management setups meeting, a signal message can come to all teachers. Or if there is a Signal institution group with any messages saying Setup Exam from 10:30 to 11:00 to Xth Class of Science, Anthropic App automatically can create an exam and set it up. 

This is going to be exciting. But moving to non-open-source IMs is not going to change anything. 

As everyone is encrypting messages ("End to End") Encryption. Everyone can provide any feature. But Open Source is the Key ...