What the actual fuck is going on with web development nowadays?

Look at the sheer number of ancillary files in this repo:

    .agents
    .claude
    .config
    .cursor
    .dagster_home
    .depot
    .flox
    .github
    .husky
    .idea
    .interface-design
    .pi
    .posthog-code
    .run
    .semgrep
    .stamphog
    .vscode
    .zed
    agent-os
    bin
    cli
    common
    devenv
    docker
    docs
    frontend
    funnel-udf
    livestream
    nodejs
    packages/quill
    patches
    playwright
    posthog
    products
    proto
    rust
    services
    share
    terraform
    tools
    .cursorignore
    .cursorrules
    .dockerignore
    .editorconfig
    .env.development
    .env.example
    .env.local.example
    .env.services
    .envrc
    .git-blame-ignore-revs
    .gitattributes
    .gitignore
    .kearc
    .mcp.json
    .nvmrc
    .oxfmtrc.json
    .oxlintrc.json
    .stylelintignore
    .stylelintrc.js
    .test_durations
    .test_quarantine.json
    .watchmanconfig
    .worktreeinclude
    .worktreelink
    AGENTS.md
    AI_POLICY.md
    CHANGELOG.md
    CLAUDE.md
    CONTRIBUTING.md
    Dockerfile
    Dockerfile.llm-analytics
    Dockerfile.ml-mirror-image-scrub
    Dockerfile.node
    Dockerfile.playwright
    Dockerfile.recording-rasterizer
    Dockerfile.sandbox
    LICENSE
    README.md
    conftest.py
    dagster_cloud.yaml
    depot.json
    dist-workspace.toml
    docker-compose.base.yml
    docker-compose.dev-full.yml
    docker-compose.dev.yml
    docker-compose.hobby.yml
    docker-compose.multinode-clickhouse.yml
    docker-compose.playwright.yml
    docker-compose.profiles.yml
    docker-compose.sandbox.yml
    greptile.json
    hogli.yaml
    manage.py
    otel-collector-config.dev.yaml
    package.json
    pnpm-lock.yaml
    pnpm-workspace.yaml
    postcss.config.js
    posthog.json
    pyproject.toml
    pytest.ini
    tach.toml
    tsconfig.dev.json
    tsconfig.json
    tsconfig.kea-typegen.json
    turbo.json
    unit.json.tpl
    uv.lock

What percentage of those files are actually directly related to the source code of the software? 1%?

How can anyone in their right mind look at this kind of setup and feel good about it?