Reviewers mostly see Arc as a thoughtful browser built around organization: spaces, vertical tabs, split view, profiles, shortcuts, and sync repeatedly make people feel more focused and less buried in tabs. Many say it replaced Chrome or Safari for daily work, though several note a learning curve as habits around tabs and bookmarks change. The main complaints are practical: missing or awkward bookmark behavior, some site and extension compatibility gaps, Windows rough edges, CPU and memory use, crashes or bugs, and growing concern that development has slowed or shifted elsewhere.