If you only consume the content from your follows you are indeed safe but thats not a social network experience

If you want to potentially be exposed to content of follows of your follows its approximately 100k-100kk users which kinda could work on a moderate gaming pc but def not a regular tier-2/tier-3 smartphone

If you want to see more 🤝🤝🤝friends of friends connections you need a solid hardware cluster given that at least some activity happens