They clearly need devs with higher standards.

I have seen a similar list before, and couldn't currently find the article, this one is pretty good:
From pixelplex.io link below


Seamless accessibility and user acquisition

Telegram apps seamlessly integrate into the Telegram ecosystem. Unlike traditional mobile app development or cross-platform app development services that require separate installations and updates, Telegram apps are directly accessible within the Telegram interface. This enables users to effortlessly explore a wide range of services and solutions.

Moreover, the familiarity with the Telegram platform helps reduce user acquisition costs and allows users to swiftly transition to new apps.

Access to a large user base

Telegram boasts a vast user base of 900 million active monthly users who  generate 500 billion channel views each month. Therefore, the development of a Telegram app will allow you to gain access to this extensive network and empower you to promote your services and solutions to a diverse audience.

Enhanced security

Telegram’s ecosystem prioritizes stringent security measures and ensures increased user data protection and adherence to regulatory requirements.

Since bots and Mini Apps operate within the Telegram environment, they benefit from the same end-to-end encryption and security protocols that Telegram is known for. This enhanced security builds trust and confidence, making Telegram apps a reliable choice for users.

Diverse monetization options

Telegram apps offer diverse opportunities to generate revenue. These include:

    In-app purchases. Enabling users to buy virtual goods and premium features within the app.
    Subscriptions. Offer access to exclusive content and features, thus fostering long-term user engagement and loyalty.
    Advertising. Display ads within the app tailored to the interest of users.
    Sponsored content. Collaborate with brands to create sponsored posts and ensure a lucrative revenue stream.

Furthermore, the integration of Wallet Pay, which supports both fiat and cryptocurrency payments, further expands monetization opportunities, allowing users to make payments seamlessly within Telegram apps. Besides, Telegram’s recent launch of USDT payments on the TON blockchain adds convenience for users and creates new revenue channels for developers.

Efficient viral mechanisms

Telegram features an intuitive mechanism for sharing Mini Apps and content, which streamlines user acquisition and ensures increased engagement. The viral mechanism is straightforward: users are rewarded for referring friends and actively participating in the app’s activities.

A prime example of the simplicity of viral mechanisms within Telegram is Notcoin, a tap-to-earn game where users earn rewards by tapping the main screen.

In January, it achieved a remarkable milestone with 20 million sign-ups within just 26 days of its release. The game’s viral growth is driven by its referral system, where players share referral links with friends, and both the referrer and the new user receive Notcoins as a reward.

In Notcoin, friends that join the game through personal referrals can form Squads, encouraging them to compete against each other and other squads. This creates organic connectivity, keeping users engaged and expanding the reach of Telegram apps.
Seamless multi-platform compatibility

Telegram apps operate smoothly across various platforms, including iOS, Android, Windows, macOS, and Linux. Users can engage with these apps on any device, whether it’s a smartphone, tablet, or desktop, without facing any limitations or inconsistencies.

Thanks to this flexibility and convenience, users can access their preferred services on any device they choose.

https://pixelplex.io/blog/should-you-invest-in-telegram-apps/